Showing Ground Crewmen At Da Nang, Carrying Air-To-Air Philco Sidewinder, To Parked F-4c McDonnell Preparing The Aircraft For A Mission Over North Vietnam. In Background McDonnell Phantoms Are Also In Preparation For Missions. McDonnell F-4cs Carry Quite A Variety Of Ordance. Sparrow Missiles Are Used In Case Of Encounters With Mig-21 Or 17 Jet Fighters. Sparrow Is Used From Long Range And Then The Sidewinder As The Phantom Closes In.