Senior Airman Stephen Westhoff, 455th Expeditionary

Senior Airman Stephen Westhoff, 455th Expeditionary Aircraft Maintenance Squadron aerospace propulsion journeyman, tightens down a part while working on an EC-130 Compass Call engine at Bagram Air Field, Afghanistan, Feb. 10, 2016. The EC-130 is a tactical weapon system that uses a heavily-modified version of the C-130 Hercules airframe and provides offensive systems that are capable of disrupting enemy command and control. (U.S. Air Force photo by Tech. Sgt. Nicholas Rau)