Workers assemble F-84 Thunderjets and test their machine guns in Farmingdale, New York

WS F-84 stands on snowy airfield with spent shell casings on ground beneath it; smoke emerges as gun fires for test / worker in cockpit starts the plane and smoke emerges; sign in foreground states "Gun Range Danger Restricted Area" / worker remains in cockpit of tested jet / LS F-84 with spent shell casings beneath / tail assembly moves toward fuselage for joining / pilot enters cockpit of jet, outside / cockpit hood slides shut / man works at tail end of jet; tail is labeled "US Air Force"