LANGLEY AIR FORCE BASE, Va. -- U.S. Army Col. Glenn Grothe, 733d Mission Support Group commander, receives an F-15 Eagle incentive flight from U.S. Air Force Capt. Justin Eagan, 71st Fighter Squadron pilot, July 6. Colonel Grothe took the opportunity to familiarize himself with the aircraft and its unique capabilities as the Air Force and Army join forces under Joint Base Langley-Eustis. (U.S. Air Force photo/Staff Sgt. Tabitha Kuykendall)