Engine smoke billows from the A-1 Skyraider 'Wabash Cannonball,' tail number 619, as it fires up for another mission. Colorful nose art like this personalized the rugged Skyraiders flown by U.S. Air Force squadrons in Vietnam, while ground crews like the airman seen here signaling the pilot kept these aircraft flying mission after mission under demanding wartime conditions. Project: 218930