Uncle Walt
Senior Master Sgt. Walt Markwas, 91st Air Refueling Squadron boom operator, stands in front of a KC-135 Stratotanker at MacDill Air Force Base, Fla., Jan. 28, 2015. Markwas has been a boom operator on the KC-135 for the past 15 years and is retiring after more than 26 years of service June 1. (U.S. Air Force photo by Senior Airman Ned T. Johnston/Released)