Lt. Col. Eric Perlman, an F-16 instructor pilot with

Lt. Col. Eric Perlman, an F-16 instructor pilot with the Air Force Reserve, leads a classroom briefing for U.S. and Dominican Republic airmen as part of an exercise to combat illegal drug trafficking Dec. 3, 2013, over the skies of the Caribbean. The exercise is part of the Sovereign Skies Expansion Program, an initiative between the U.S., Colombian, and Dominican Republic air forces to share best-practices on procedures to detect, track and intercept illegal drugs moving north from South America. (U.S. Air Force photo by Capt. Justin Brockhoff/Released)