Capt. Glen Whelan, F-15 pilot with the 44th Fighter Squadron, displays the survival vest worn by pilots before (left) and after (right) the AFSO21 change was implemented. The modification was made due to the increased weight of the vests over the last eight years and eliminated duplicate items already found in cockpits. (U.S. Air Force photo/ Airman 1st Class Tara A. Williamson)
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