Staff Sgt. Robert Pennington, an aerospace ground equipment craftsman with the 1st Special Operations Maintenance Squadron, uses a scope to look inside a munitions handling unit exhaust pipe at the AGE hangar on Hurlburt Field, Fla. Oct. 3, 2016. An MHU is used to assist munitions Airmen with loading munitions onto aircraft. (U.S. Air Force photo by Senior Airman Krystal M. Garrett)