SMSgt. Paul Johnson, 317th Airlift Squadron, instructs members of the Naval Mobile Construction Battalion 17 in Colorado Springs, Colo., Aug. 24, on how to properly tie-down cargo during the annual AFRC-sponsored air mobility exercise, "Patriot Express." The ALCF is responsible for the training of Air Force and sister service units on how to move by air. They instruct over 400 units in preparing and loading their mobility equipment for air shipment. (U.S. Air Force photo/SrA. Kelly Galloway)