Lt. Col. Joe McGill, test pilot, and Capt. Andrew Petry, test engineer, train in an F-16 Fighting Falcon over the Gulf of Mexico, April 3. While the 96th Test Wing personnel develop and assess systems like the F-16, aircrew fly training missions between flight tests to build and maintain military aviation skills. (U.S. Air Force photo by Master Sgt. Tristan McIntire)