Air War groups
MCGHEE TYSON AIR NATIONAL GUARD BASE, Tenn. - More than 60 lieutenant colonels at the I.G. Brown Training and Education Center here, June 4, 2015, form up with NCO academy students, instructors and staff for the day's retreat. The officers were part of the AWC's fourth seminar on campus for the Air National Guard and Air Force Reserve Command, which included one Marine Corps officer in attendance. (U.S. Air National Guard photo by Master Sgt. Mike R. Smith/Released)

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Photo by: Master Sgt. Mike R. SmithReleased |  VIRIN: 150604-Z-SM234-013.JPG