Senior Airman Tyler Quayle, 33rd Maintenance Squadron low observable maintenance journeyman, cleans the slot of an F-35A Lightning II panel before replacing a grommet at Eglin Air Force Base, Fla., Fla., April 28, 2016. The panel must be prepared with a cleaning agent to ensure adhesives can properly bond to the surface keeping parts in place. (U.S. Air Force photo/Senior Airman Andrea Posey)