Staff Sgt. Aaron Nazario, 71st Aircraft Maintenance Unit crew chief, measures the spacing for shorings during preparation of an HC-130J Combat King II for a situational awareness communication upgrade (SACU) modification Sept. 25, 2019, at Moody Air Force Base, Ga. The shorings allow the aircraft to be put into a state of no-loading”, where the pressure and weight of the aircraft will be reduced, allowing the modifications to be implemented without damage to the aircraft’s hull integrity. This SACU will enhance the aircraft’s ability to communicate with personnel on the ground during search and rescue operations. (U.S. Air Force photo by Senior Airman Erick Requadt)