Electronics technician (United States Navy)

"ETMS" redirects here. For the aircraft monitoring network, see Enhanced Traffic Management System.
This article is about the naval rating. For the general occupation, see Electronics technician.

The United States Navy occupational rating of Electronics Technician (abbreviated as ET) is a designation given by the Bureau of Naval Personnel (BUPERS) to enlisted members who satisfactorily complete initial Electronics Technician "A" school training.

History of the Electronics Technician rating

Electronics technician

Rating insignia
Issued by United States Navy
Type Enlisted rating
Abbreviation ET
Specialty Technical

WWII era

The Electronics Technician (abbreviated as ET) rating was originally established as Radio Technician (abbreviated as RT) in April 1942 during the height of World War II. The rating insignia adopted was that of the established Radioman (abbreviated as RM) rating, and remained until October 1945, when the rating name was changed to Electronic Technician's Mate (abbreviated as ETM). In 1948, the Navy changed the name of the rating to Electronics Technician, and a new rating insignia was created.[1]

Vietnam era to present

In 1971 the Radarman (abbreviated as RD) rating was disestablished. Former Radarmen, depending on their training, were placed in to the either the established Electronic Technician (ET) rating or either of the newly established Operations Specialist (abbreviated as OS) or Electronic Warfare Technician (abbreviated as EW) ratings.[2]

On October 1st, 1998 the Data Systems Technicians (abbreviated as DS) rating was disestablished. Former Data Systems Technicians were, depending on their training, placed in to either the Electronics Technician or Fire Controlman (abbreviated as FC) rating.[3]

Creation of the service ratings ET, ETR, ETV, and ETN

On November 3rd, 2015 a mostly administrative change was made to the general ET rating. Electronics Technicians who volunteered for submarine duty where redesignated as either Electronics Technician, Submarine, Communications (abbreviated as ETR) or Electronics Technician, Submarine, Navigation (abbreviated as ETV). Nuclear Power trained Electronics Technicians were redesignated as Electronics Technicians, Nuclear Power (abbreviated as ETN). Electronics Technicians serving in the service rating Electronics Technician (ET) remained designed as Electronics Technician (ET). All three new ratings as well as the Electronics Technician rating continue to use the Electronics Technician rating insignia.[4]

The reason for the change is because even those these four service ratings (ET, ETR, ETV, and ETN) fall under the same general rating (ET), share a common history, have similar names and share the same rating insignia although the enlistment requirements, initial 'A' school training, specialized 'C' school training, job assignments (billets), specific qualification, and community managers are unique to each service rating. This prevents someone trained in any of the four service rating from easily transferring to another of the four service rating without significant training and qualification that would be required by anyone transferring from any of the other general rating in the Navy.[4]

Electronics Technician service ratings

Electronics Technician (ET)

"An Electronics Technician (ET) Petty Officer Third Class performs a voltage check on a power circuit card aboard the aircraft carrier USS Abraham Lincoln (CVN 72).

General Description

ETs are responsible for electronic equipment used to send and receive messages, computer information systems, long range radar, and calibration of test equipment. They maintain, repair, calibrate, tune, and adjust electronic equipment used for communications, detection and tracking, recognition and identification, navigation.[5]

Working Environment

Jobs performed by ETs are performed throughout the Navy's fleet of surface ships including aircraft carriers and Aegis cruisers and destroyers, and at communication activities and repair activities ashore.[5]

Minimum Requirements

Employment and Subspecialties

Entry rates ET3-ET2 (E4-E5) specialize as electronics communications technician, electronics data systems technician, or electronics radar systems technician. ET1-ETC (E6-E7) are electronics systems managers.[6]

Electronics Communications Technicians
An Electronics Technician (ET) Petty Officer Third Class repairs a circuit board in the 2M shop aboard the amphibious transport dock ship USS San Antonio

Maintain shore-based, ship-based, and portable communications equipment, including all associated cabling, computer, multiplexing, switching, cryptographic, recording, cooling water and dry air systems; analyze equipment operation and align, troubleshoot, and repair equipment to the lowest replaceable unit; execute casualty control procedures, restoring operability for all assigned electronic equipment, recognizing mission criticality and redundancies within systems; perform administrative functions that include the updating of casualty reporting messages, technical manuals, equipment maintenance records, and managing test equipment calibration requirements; complete fiber optic and basic soldering repair, electrical safety checks, and test equipment calibration; and supervise personnel who complete maintenance, conduct tool, MAM, and test equipment inventories, logistics support, and operational verification testing of new systems or equipment.[7]

Electronics Data Systems Technicians

Maintain data link, inertial navigation, tactical network, message routing, digital production/projection, calibration, fiber optics, micro-miniature module test and repair, computer-based, and peripheral computer systems; analyze equipment operation, establish computer and network configurations, and troubleshoot and repair computer-based equipment to the lowest replaceable unit; execute casualty control procedures, restoring operability for all assigned electronic equipment, recognizing mission criticality and redundancies within systems; perform administrative functions that include the updating of casualty reporting messages, technical manuals, equipment maintenance records, and managing test equipment calibration requirements; complete fiber optic and basic soldering repair, electrical safety checks, and test equipment calibration; and supervise personnel who complete maintenance, conduct tool, MAM, and test equipment inventories, logistics support, and operational verification testing of new systems or equipment.[7]

Electronics Radar Systems Technicians

Maintain surface search, air search, and weather radar systems, radar video switchboards, synchros, Identification Friend or Foe (IFF) equipment, tactical air navigation equipment, including all associated cabling, cooling water and dry air systems; analyze equipment operation and align, troubleshoot, and repair equipment to the lowest replaceable unit; execute casualty control procedures, restoring operability for all assigned electronic equipment, recognizing mission criticality and redundancies within systems; perform administrative functions that include managing test equipment calibration requirements and the updating of casualty reporting messages, technical manuals, and equipment maintenance records; complete, fiber optic and basic soldering repair, electrical safety checks, and test equipment calibration; and supervise personnel who complete maintenance, conduct tool, MAM, and test equipment inventories, logistics support, and operational verification testing of new systems or equipment.[7]

Required Training

Enlistees are taught the fundamentals of the ET rating through the following formal Navy schooling.

An Electronics Technician (ET) Seaman receiving a certificate upon graduating from ET 'A' School.
School Present Location Approximate Training Time Subjects Training Methods Reference
Apprentice Technical Training (ATT) Great Lakes, Ill. 11 Weeks Basic electronics and electronic circuitry, safety, digital theory, microcomputers, fiber optics, test equipment and trouble-shooting techniques. Self Paced Computer Based Training and laboratory application with written tests and practical laboratory performance tests. [8]
ET “A” School Great Lakes, Ill. 19 Weeks Communications Suite (SATCOM, HF receiver / transmitter), 2D Surface radar transmitters / receivers, Radar Display. Self Paced Computer Based Training and laboratory application with written tests and practical laboratory performance tests.

After "A" school, ETs continue on to advanced "C" schools.[9] School lengths and content vary, but many colleges and universities offer college credits for these Navy courses.[10][11][12]

Electronics Technician Navy Enlisted Classifications

The Navy Enlisted Classification (NEC) system supports the enlisted rating structure in identifying personnel and billets in manpower authorizations. NEC codes identify a non-rating wide skill, knowledge, aptitude, or qualification that must be documented to identify both people and billets for management purposes. The most current information regarding NECs can be found in the Navy NEOCS Manual.

After 'A' school and between duty assignments ETs will attend advanced 'C' school training. These 'C' school give the ET advanced training in the specific systems that will be required to maintain and repair at their next duty assignment.[13]

There are 62 ET-related NECs.[14]

NEC Code NEC Title School Locations NEC Code NEC Title School Locations
1402 Tactical Communications Maintenance Technician 1403 AN/WSC-6(V)5 Super High Frequency (SHF) Satellite Communications (SATCOM) Maintenance Norfolk, VA
1404 AN/WSC-8 Super High Frequency (SHF) Satellite Communications (SATCOM) Maintenance 1405 AN/WSC-6(V)7 Combatant Super High Frequency (SHF) Satellite Communications (SATCOM) Maintenance Norfolk, VA

San Diego, CA

1406 AN/WSC-6(V)9 Combatant Super High Frequency (SHF) Satellite Communications (SATCOM) Maintenance Norfolk, VA

San Diego, CA

 1407 AN/SSC-12 Shipboard Air Traffic Control Communications (SATCC) Technician
1410 AN/SRC-55(V) HYDRA Technician Norfolk, VA

San Diego, CA

 1413 Meteorologist Equipment Maintenance Technician Biloxi, MS
1415 Combined Shore Communications Maintenance Technician 1419 Electromagnetic Compatibility Technician Norfolk, VA
1420 Surface HF Communications System Maintenance Technician San Diego, CA 1424 Communications Equipment (SRQ-4) Technician Norfolk, VA

San Diego, CA

1425 Communications Equipment (WSC-3/UHF DAMA) Technician Norfolk, VA

San Diego, CA

 1428 Small Combatant Communications Electronic Subsystem Technician San Diego, CA
1429 Flight Deck Communications Systems (FDCS) Maintenance Technician 1430 AN/USC-38 (V)2, 3 Maintenance Technician Norfolk, VA

San Diego, CA

1433 Super High Frequency (SHF) Satellite Communications (SATCOM) Maintenance Technician 1452 NAVMACS(V)3 Shipboard Maintenance Technician San Diego, CA
1456 FLTSATCOM (CUDIXS/DAMA NAVCOMMSTA) Maintenance Technician 1458 VERDIN/ISABPS Communications Systems Technician Norfolk, VA
1460 Communications Security (COMSEC) Maintenance Technician Norfolk, VA

San Diego, CA

 1465 Special Maintenance (AN/GSC-52(V), GSC-39, FSC-78/79 SHF Satellite Terminal) Technician Fort Gordon, GA
1468 Special Maintenance (SHF SATCOM System) Technician 1471 URN-25 Tactical Air Navigation Technician Norfolk, VA

San Diego, CA

1486 Single Audio System (SAS) Norfolk, VA

San Diego, CA

 1491 FFG-7 Class Navigation Electronics Subsystem Technician Norfolk, VA

San Diego, CA

1493 Tactical Support Communications (TSCOMM) Replacement Program Maintenance Technician Jacksonville, FL 1494 LHD Class Radio Communications System Maintenance Technician Dam Neck, VA
1495 AN/SYQ-13 NAV/C2 Maintainer 1503 Radar (SPS-49) Technician San Diego, CA
1504 Radar (SPS-55) Technician Norfolk, VA

San Diego, CA

 1507 Radar (SPS-67(V)) Technician San Diego, CA
1510 Radar (AN/SPS-49(V)5 and 7) Technician San Diego, CA 1511 Radar (AN/SPS-40E) Technician
1517 DASR/STARS Maintenance Technician Pipeline Pensacola, FL 1520 AN/SPS-73 Maintenance Technician Norfolk, VA

San Diego, CA

1529 Standard Terminal Automation Replacement System (STARS) Maintenance Technician Pensacola, FL 1530 Digital Airport Surveillance Radar (DASR) Pensacola, FL
1568 AN/TPX-42A(V)13 Shipboard DAIR Maintenance Technician 1570 Air Traffic Control Communications Technician Pensacola, FL
1571 AN/UPX-29(V) Ship System Maintainer Saint Inigoes, MD 1572 AIMS System Technician Norfolk, VA
1574 DAIR/GCA (TPX-42) Maintenance Technician 1576 CATC DAIR Maintenance Technician
1579 Precision Approach Radar Technician Pensacola, FL 1580 ASR-8 Maintenance Technician
1589 Fleet Electronics Calibration (FECL) Technician Biloxi, MS 1590 AN/SPN-46(V) Radar Technician Pensacola, FL
1591 Miniature/ Microminiature Module Test and Repair (2MTR) Technicians Multiple locations 1592 AN/TPX-42A(V)14 Shipboard DAIR Maintenance Technician Pensacola, FL
9509 2-M Instructor Norfolk, VA

San Diego, CA Whidbey Island, WA ATSUGI JAPAN

 9604 JTIDS Shipboard Terminal Maintenance Technician Dam Neck, VA
9605 Naval Modular Automated Communications Systems II (NAVMACS II) Maintenance Technician Norfolk, VA

San Diego, CA

 9606 Shipboard Air Traffic Control (SATC) Radar Technician (AN/SPN-43C)
9607 High Frequency Radio Group (HFRG) Maintenance Technician San Diego, CA 9608 Radar Technician (AN/SPS-67(V)3) Norfolk, VA
9610 Radar (AN/SPS-49A(V)) Technician Norfolk, VA 9611 AN/SSN-2(V)4 Maintainer
9612 AN/WSN-7(V) Operations and Maintenance Technician Dam Neck, VA 9613 Naval Special Warfare (NSW) Communications Technician Coronado, CA
9614 AN/SPN-35C Maintenance Technician Pensacola, FL 9615 AN/SPS-67(V)5 Radar Technician Norfolk, VA

Submarines: Electronics Technician Communications (ETR) and Electronics Technician Navigation (ETV)

General Description

The Navy’s Submarine Electronics / Computer Field (SECF) offers extensive training in the operation and maintenance of “Today’s High Technology” advanced electronics equipment, digital systems and computers used in submarine combat control, sonar, navigation and communications systems. An individual selecting SECF will receive training in electricity, electronics, computers, digital systems, fiber optics and electronics repair. The standards for selection for enlistment in the Navy’s Submarine Electronics/ Computer Field are high. Personnel interested in applying for the Submarine Electronics/ Computer Field should be seriously interested in pursuing the challenge this highly technical field offers. They must be mature, ready to take on significant responsibility and willing to apply themselves.[15]

What They Do

Volunteers for the Submarine Electronics/Computer Field will specialize in one of four Submarine Ratings (Electronics Technician – Communications (ETR), Electronics Technician - Navigation (ETV), Fire Control Technician (FT), and Sonar Technician Submarines (STS) working in one of four areas: combat systems, communications, navigation or underwater acoustic technologies. All four ratings/specialty areas are heavily involved with computer and electronics systems. The communications specialty (ETR) is responsible for all operational and administrative aspects of the submarine’s radio communication equipment, systems and programs. The navigation specialty (ETV) is responsible for all operational and administrative aspects of the submarine’s navigation and radar equipment, systems and programs.[15]

A Navigation Electronics Technician (ETV) Petty Officer First Class work on an assembly piece for the stern plane angle indicator aboard the submarine USS Annapolis

Minimum Requirements

Required Training

Submarine ETs (navigation and communications) must complete Basic Enlisted Submarine School, ATT, Tactical Computer and Network Operator, and "A" School at Naval Submarine School in Groton, CT.

Electronics Technician Communication (ETR)
School Present Location Approximate Training Time Subjects Training Methods Reference
Basic Enlisted Submarine School Groton, CT 4 Weeks Indoctrination in basic submarine systems. Group instruction and practical application. [17]
Class "A" Technical School and Specialty Pipeline School Groton, CT 14-28 Weeks Basic electricity, electronics and computer technical knowledge and skills and preparation for communications specialties and assignment on a fast attack or ballistic missile submarine. Group instruction, practical application and equipment labs.
Electronics Technician Communication Naval Enlisted Classifications
NEC Code NEC Title NEC Code NEC Title References
14GM SSGN Navigation Maintenance Electronics Technician 14NM Navigation Equipment Maintenance Technician [14][4]
14NO Navigation Equipment Operator 14NP SSN 774 Class Navigation and Ship's Electronic Equipment Technician
14NV SSN/SSBN Assistant Navigator 14TK SSN 21 Navigation Technician
14XM Electronics Technician Trident II SWS D-5 Backfit SWS Navigation Maintenance Technician 14XO Electronics Technician Trident II SWS D-5 Backfit SWS Navigation Operator
3329 Navigation Electronics Operations and Maintenance Technician (TRIDENT II D5 Backfit SWS)
Electronics Technician Navigation (ETV)
School Present Location Approximate Training Time Subjects Training Methods Reference
Basic Enlisted Submarine School Groton, CT 4 Weeks Indoctrination in basic submarine systems. Group instruction and practical application. [18]
Class "A" Technical School and Specialty Pipeline School Groton, CT 14-28 Weeks Basic electricity, electronics and computer technical knowledge and skills and preparation for navigations pecialties and assignment on a fast attack or ballistic missile submarine. Group instruction, practical application and equipment labs.
Electronics Technician Navigation Naval Enlisted Classifications
NEC Code NEC Title NEC Code NEC Title References
14AA Common Submarine Radio Room (CSRR) Maintenance Technician 14AB Common Submarine Radio Room (CSRR) Equipment Operator [14][4]
14BH SSN 774 Class Electronic Support Equipment Maintenance Technician 14CM SSN Radio Frequency (RF) Equipment Technician
14EM SSN ESM Equipment Maintenance Technician 14HH SSN 21 Class ESM Technician
14TM TRIDENT I/II Radio Frequency (RF) Equipment Maintenance Technician 14RO SSN Radio Frequency (RF) Equipment Operator
14TO TRIDENT I/II Radio Frequency (RF) Equipment Operator 14ZA AN/BRD-7 Submarine Radio Direction Finding (RDF) Set Maintenance Technician
14ZQ SSN/SSGN AN/BLQ-10A (V) Submarine Electronic Warfare Support (ES) Equipment Operator 14ZR SSN/SSBN AN/WLR-8(v) Submarine Electronic Warfare Support (ES) Equipment Operator

Electronics Technician Nuclear Power (ETN)

Nuclear-trained ETNs perform duties in nuclear propulsion plants primarily in operating, maintaining, and repairing reactor instrumentation and control systems. ETNs may be assigned as an operator to a nuclear-powered aircraft carrier, as an instructor at a Navy nuclear power training command, or as a technician at a shipyard or other nuclear support facility. Additionally ETNs may volunteer for nuclear submarine service. ETNs are the only rating in the Navy that can qualify as a reactor operator of a naval nuclear propulsion plant.

Training

ETNs complete several different phases of training in order to be able to operate a naval nuclear propulsion plant. In order to be selected for nuclear training prospective Navy recruits must have a high enough cutscore on the Armed Service Vocational Battery (ASVAB) that score being greater than 88 and the Navy Advanced Placement Test (NAPT) that score being greater than 55%. Prospective nuclear recruits are then sent to Navy boot camp where prospective nuclear trainees are selected in a 50-30-20 ratio to be trained as nuclear machinist's mates, nuclear electrician's mate, or nuclear electronics technicians. Those who are selected to be nuclear electronics technicians then enter the Navy Nuclear Pipeline to train to become a ETN.

In the first stage of training in the Navy Nuclear Pipeline, prospective ETNs are trained for six months at the Nuclear Field 'A' School (NFAS) at the Naval Nuclear Power Training Command (NNPTC) in Goose Creek, SC. The curriculum at NFAS includes a mathematics refresher course, basic electronics theory, analog electronics theory (EFUNDS), digital electronics theory, and instrumentation and control equipment (I&CE) theory and maintenance. The curriculum is presented in a high paced manner that ramps up over the term at NFAS in order to prepare students for the difficulties of Nuclear Power School. The curriculum is very similar to that which is presented to nuclear electricians except that nuclear electricians train in electrical motor and generator theory and maintenance instead of I&CE theory and maintenance. Due to the specialized training given at NFAS, ETNs who have trained there instead of another ET 'A' school are not qualified to be assigned to billets designed for non-nuclear ETs. Personnel who are disqualified from Navy nuclear work ('de-nuked') or who fail to qualify for Navy nuclear work later in the pipeline are reclassified and retrained into another rating in order to remain in the Navy. ETN is not eligible for direct conversion to ET. This means that for an ETN to become and ET they must attend the ET 'A' school.

In the second stage of training in the Navy Nuclear Pipeline, ETNs are trained for six months at the Nuclear Power School at the NNPTC. The curriculum for ETNs at the Nuclear Power School includes a higher level mathematics (Calculus) refresher course, introduction to nuclear propulsion systems, Navy nuclear mechanical, electrical, and electronics system design, reactor theory, health physics, basic materials science, and chemistry as it applies to nuclear power plants. The curriculum is similar for MMNs, EMNs, and ETNs, except that each rating focuses more on their particular nuclear system design (for nuclear ETNs this means that they have additional training in nuclear electronics design).

In the third and final stage of training in the Navy Nuclear Pipeline, ETNs are trained for six months at one of four Navy nuclear prototype training units (NPTUs). Two NPTUs are moored training ships (MTS) using S5W reactors located at the Naval Weapons Station in Charleston, SC., and two additional NPTUs are land-based prototype units using a S7G reactor and a S8G reactor located in Saratoga Springs, NY. The curriculum for ETNs at an NPTU includes detailed health physics training, design, operation, and maintenance of electronics systems for the NPTU, nuclear watchstanding procedures, and nuclear casualty procedures. Unlike the first two stages of the Navy Nuclear Pipeline where the curriculum is presented in a typical classroom format, training at an NPTU is self-motivated training where students are required to research different aspects of a nuclear propulsion plant design, operation, or theory and demonstrate this knowledge in an oral interview with a qualified nuclear instructor. Additionally, ETNs must perform graded watches under the instruction of a qualified nuclear instructor where they operate a particular piece of nuclear equipment or respond to a casualty. The culmination of training for a ETN is an oral board where a ETN must demonstrate the knowledge of all procedures, equipment, theory expected for a nuclear reactor operator. Completion of NPTU qualifies a ETN to stand watch on the NPTU or to train to operate nuclear propulsion plants on a nuclear aircraft carrier or submarine. Additionally, it gives the individual the ETN Navy Enlisted Classification (NEC), and the individual is then said to be "nuclear qualified."

Upon completion of the Naval Nuclear Pipeline, most nuclear qualified ETNs are sent to nuclear aircraft carriers or nuclear submarines. On a nuclear-powered aircraft carrier, ETNs are sent to a nuclear training division where they train to qualify to operate the nuclear reactors of the ship in a similar way to NPTU for about six months prior to being sent to a reactor control division. In contrast, on a submarine ETNs are directly assigned to the Reactor Controls division and are directed to qualify different watches incrementally. Due to the smaller number of personnel on a nuclear submarine, ETNs must also cross qualify on several nuclear electrician watches. Since ETNs are required to stand watches, perform maintenance, and train and qualify on additional submarine systems, it is not uncommon for it to take over 12 months for a ETN to become fully qualified as a reactor operator, shutdown reactor operator, and all intermediate watches. Upon subsequent transfer to an NPTU or another nuclear ship, operators are required to re-qualify the same watches in only about 6 months.

Even upon completion of being fully qualified on all ETN watches ("qualified in rate"), additional proficiency and casualty training is required for all ETNs. On a ship this generally includes general Engineering or Reactor Department training, Reactor Controls division training, periodic exams and interviews, monitored maintenance and operations, periodic watch re-qualifications, and monitored tactical or casualty drills.

Usually after a ETN is "fully qualified" the individual is sent to an "in-rate" technical school ETMS where the technician studies electronic troubleshooting and repair on shipboard equipment. Completion of this school allows the technician to be designated with the NEC 3373.

Senior ETNs (typically those who hold the rank of petty officer first class (E-6) or higher) are expected to qualify for senior supervisory watches. Self-motivated training for this includes the detailed operations of all nuclear systems on a ship (not just the ETN specific parts) focusing on the big picture view of nuclear operations and casualty response. The training time required to qualify for senior supervisory watches depends on the individual.

See also

References

  1. ↑ "Compilation of Enlisted Ratings and Apprenticeships, U.S. Navy, 1775 to 1969". History.navy.mil. Retrieved 2012-05-16.
  2. ↑ https://www.navycs.com/navy-jobs/operations-specialist.html
  3. ↑ http://www.navydads.com/forum/topics/discontinued-and-changed
  4. 1 2 3 4 http://www.public.navy.mil/bupers-npc/reference/messages/Documents/NAVADMINS/NAV2015/NAV15261.txt
  5. 1 2 3 "Electronics Technician Community Manager Page". Navy Personnel Command, United States Navy.  This article incorporates public domain material from websites or documents of the United States Navy.
  6. ↑ Navy Enlisted Occupational Standard for Electronics Technician (ET). Retrieved 2012-07-16.
  7. 1 2 3 "LaDR for Electronics Technician" (PDF). Credentialing Opportunities On-Line. United States Navy. Retrieved 22 April 2016.  This article incorporates public domain material from websites or documents of the United States Navy.
  8. ↑ "Electronics Technician (ET) Rating Info Card" (PDF). Credentialing Opportunities On-Line. United States Navy. Retrieved 17 April 2016.  This article incorporates public domain material from websites or documents of the United States Navy.
  9. ↑ List of Electronics Technician "C" schools.. Retrieved 2016-04-17.
  10. ↑ Guide to the Evaluation of Educational Experiences in the Armed Services - Electronics Technician - 6/15 to Present. Retrieved 2016-04-17.
  11. ↑ "Navy College Program".
  12. ↑ http://www.cool.navy.mil/usn/jst/et_jst.pdf
  13. ↑ http://www.cool.navy.mil/usn/enlisted/rating_info_cards/et.pdf
  14. 1 2 3 "Navy NEOCS Manual".
  15. 1 2 "Submarine Enlisted Community Manager Page". Navy Personnel Command, United States Navy.  This article incorporates public domain material from websites or documents of the United States Navy.
  16. ↑ http://www.public.navy.mil/bupers-npc/reference/milpersman/1000/1300Assignment/Documents/1306-618.pdf
  17. ↑ Electronics Technician (ETR) Rating Info Card. Retrieved 2016-04-18.  This article incorporates public domain material from websites or documents of the United States Navy.
  18. ↑ Electronics Technician (ETV) Rating Info Card. Retrieved 2016-04-18.  This article incorporates public domain material from websites or documents of the United States Navy.
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