This is the cover of a pocket-sized 'Inflight Aid' reference manual issued to F-4 Phantom aircrews of the 366th Tactical Fighter Wing, nicknamed 'The Gunfighters', based at Da Nang Air Base, South Vietnam, during the Vietnam War. The wing's colorful emblem, a gun-toting cartoon bomb in Old West attire, adorned the tails of its aircraft (tail code 'HE') and appeared on unit patches, flight gear, and publications like this one. Booklets such as this carried the essential checklists, weapons delivery tables, and emergency procedures aircrews needed close at hand during combat sorties over Vietnam. Project: 218454