U.S. Air Force Capt. Kelsie Winklmann, a 34th Combat Training Squadron C-130H navigator instructor, acts as an Observer Coach Trainer for Royal Australian Air Force C-130J pilots during Green Flag 16-06 April 22, 2016, over Fort Polk, La. Rotational Green Flag exercises provide realistic, tactical-level joint combat employment training which is tailored to the specific needs of mobility Air Forces. (U.S. Air Force photo/Senior Airman Harry Brexel)  