Sergeant First Class Jamie Buckley performs at Country USA, a three-day music festival in Oshkosh, Wi., 28 June. Following Buckley's performance, over 100 future volunteers from all branches of service recited their oath of enlistment on the main s...

Sergeant First Class Jamie Buckley performs at Country USA, a three-day music festival in Oshkosh, Wi., 28 June. Following Buckley's performance, over 100 future volunteers from all branches of service recited their oath of enlistment on the main s...