U.S. Air Force Col. Jeffrey Nelson, left, 60th Air Mobility Wing commander, and Chief Master Sgt. Derek Crowder, right, 60th AMW command chief, present Staff Sgt. Denise McHaney, 60th Aerospace Medicine Squadron public health supervisor with her Stripes for Exceptional Performers certificate for technical sergeant Sept. 13, 2019, at David Grant USAF Medical Center, Travis Air Force Base, California. The STEP promotion program offers commanders a limited opportunity to immediately promote enlisted members to staff sergeant or technical sergeant. (U.S. Air Force photo by Heide Couch)
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