U.S. Air Force Senior Master Sgt. Ty Melton looks on as teammate Master Sgt. Ryan Sullivan trims the propeller on their team’s prototype aircraft design during the Senior Noncommissioned Leadership Course held at the 307th Bomb Wing, Barksdale Air Force Base, La., Jan. 25, 2015. Both Airmen are assigned to the 307th Maintenance Squadron and are taking part in the course, which explores thought-provoking ways to lead and influence people in the military. (U.S. Air Force photo by Master Sgt. Jeff Walston)