160204-N-DC740-012 OAK HARBOR, Wash. (Feb. 4, 2016) Master-at-Arms 2nd Class Lindsey Bakke and military working dog Fien search the area surrounding an unattended backpack during a drill at Naval Air Station Whidbey Island as part of Operation Solid Curtain-Citadel Shield. This annual exercise assesses the command readiness to respond to potential threats on or near naval installations. (U.S. Navy photo by Mass Communication Specialist 2nd Class John Hetherington/Released)