Staff Sgt. Jonathan Concepcion shows Capt. Cliff Cunningham how to program a radio used to monitor several frequencies at once. Both Reservists are from the 512 Airlift Control Flight from Dover AFB Del. The 512 ALCF provided airfield operations for transient aircraft during Maple Flag Exercise 42 at Cold Lake AB Alberta Canada. (U.S. Air Force photo/2nd Lt Joe Simms)