sentences:  On his return from Southeast Asia in June 1970, Kelley became an Operations staff officer in the tactics branch of fighter operations at Tactical Air Command's headquarters in Langley, Virginia.His responsibilities included the Air-to-Air Weapons Evaluation program, Air Combat Maneuvering Instrumentation, Continental Operations Range and MCM 3-1 issues.From August 1972 to July 1973, he attended the National War College.