Don't Kill Your Friends, Training Booklet, US Navy 1944 Sperry and the back showing photos

and the back showing photos or renderings

this indicator appears to have a production or service year of 1944

This system

The vacuum tubes look to be intact and in place

the workers and intellectuals

Don't Kill Your Friends, Training Booklet, US Navy 1944 Sperry and the back showing photosThis is an original WWII era training booklet published by the US Navy's Aviation Training Division in 1944. Alternatively entitled Safety Precautions for Fixed Gunnery, this 10 page booklet was intended to sensitize and train pilots regarding best safety practices with fixed gunnery. The 7 inch by 9 inch booklet is in very good condition given its age.