U.S. Air Force Col. David Chisenhall, 633rd Civil Engineer Squadron commander, thanks Joint Base Langley-Eustis community members for participating in Clean the Bay Day at Langley Air Force Base, Va., June 7, 2014. Approximately 250 people participated in the event at Fort Eustis and Langley. (U.S. Air Force photo by Senior Airman Austin Harvill/Released)