P/b, 15 x 23cm, 133p, Published by the Training Division, Bureau of Aeronautics, USN. 1943. Covers sighting, range estimation, tracer fire, the machine gun, bullet patterns, ballistics, optical sights, turrets, etc. Illustrated with diagrams and photographs. There is wear on the cover which is overstamped 'Naval Air Station Center, Norman, Oklahoma'. Pages yellowed with some minor damage. Named to owner. Reasonable condition. Stock code P24215A-215.