Senior Master Sgt. Brian Jensen, Utah Air National Guard’s 191st Air Refueling Squadron boom operator, hooks up a refueling boom to an Aviano F-16 Fighting Falcon over the Adriatic Sea during a two-week training exercise on Oct. 26, 2016. Jensen used the tube-like boom to transfer fuel from the KC-135 Stratotanker to more than twelve F-16s each day. (U.S. Air Force photo by Airman 1st Class Cory W. Bush/Released)