GREAT LAKES, Ill., (June 17, 2015) – Chief Machinery Repairman Joshua Wieber, leading chief petty officer of Machinery Repair “A” School, shows Area 3 Navy Junior Reserve Officers' Training Corps (NJROTC) cadets how to operate one of the school’s repair machines during the annual NJROTC Leadership Academy at Naval Station Great Lakes here, June 17. (U.S. Navy photo Scott A. Thornbloom)