The F-15EX, the Air Force’s newest fighter aircraft, sits by an F-15E Strike Eagle March 11 at Eglin Air Force Base, Fla. The newly-arrived aircraft will be the first Air Force aircraft to be tested and fielded from beginning to end through combined developmental and operational tests. The 40th Flight Test Squadron and the 85th Test and Evaluation Squadron personnel are responsible for testing the aircraft. (U.S. Air Force photo/1st Lt. Karissa Rodriguez)