1st Lt. Jeffrey Poekhan, Ranger Assessment Course student,

1st Lt. Jeffrey Poekhan, Ranger Assessment Course student, places his arms in ice water during a 12-mile ruck march near Schofield Barracks, Oahu, Hawaii, May 29, 2019. The purpose of the 19-day course is to prepare, assess and evaluate Air Force candidates for Army Ranger School. Of the 23 Airmen who began the Ranger Assessment Course, three dropped for personal motivational reasons and one dropped for medical reasons, leaving 19 standing at the end. Out of the 19, 11 Airmen met all the standards needed for a recommendation to go forward to Ranger School. (U.S. Air Force photo by Staff Sgt. Hailey Haux)