Echo box TS-280/TPS-3 - USA Voorschrift, Technical Manual, 11-1083 Range calibrator I-144 - USA Voorschrift, Technical Manual, 11-1064 Beacon transmitter-receiver AN/PPN-2 - USA Voorschrift, Technical Manual, 11-1145 Antenna AN-161 - USA Voorschrift, Technical Manual, 11-1075 Radio equipment RC-384 : Technical operation manual : General description, operating instructions, and equipment performance log Sweep generator MI-18709-B - USA Voorschrift, Technical Manual, 11-1065 Light meter - USA Voorschrift, Technical Manual, 11-2313 Browning machine gun, caliber .50, HB, M2 (mounted in combat vehicles) - USA Basic Field Manual, FM 23-65 Antiaircraft artillery : service of the piece 3-inch antiaircraft gun - USA Coast Artillery Field Manual, FM 4-125 List of publications for training - USA Basic Field Manual, FM 21-6 Basic field manual : List of publications for training - USA Basic Field Manual, FM 21-6 Animal transport / prepared under direction of the Chief of Cavalry - United States War Department, Basic Field Manuel, FM 25-5