Stock Photo Description: Free, public domain image: Grimacing Soldier Crawling Through a River.
Air Force Academy Basic Cadet Evan Rowley pushes through the water obstacle at the Jacks Valley Assault Course July 21 near Colorado Springs, Colo. Basic cadet training started June 25 and continues through Aug. 1. (U.S. Air Force photo/Mike Kaplan.
This public domain photograph may not be used in materials, advertisements, products, or promotions that in any way suggest approval or endorsement of any people appearing in the photos. Department of Defense guidelines for use.