Operation Inherent Resolve
Master Sgt. Brian Popham, assigned to the 379th Expeditionary Operations Support Squadron, monitors and adjusts signal strength from an antenna during routine maintenance checks May 27, 2015, at Al Udeid Air Base, Qatar. The Operation Silent Sentry team monitors high priority satellite communication signals, detects electromagnetic interference on those signals and geo locates the source of that interference along with other signals of interest. (U.S. Air Force photo/Staff Sgt. Alexandre Montes)