Col. Chad Hartman delivers his final remarks as the commander of the Air Force Technical Applications Center during his Change of Command ceremony June 30, 2020 at Patrick AFB, Fla. Hartman commanded the nuclear treaty monitoring center since June 2018 and is transferring to The Netherlands to work for Allied Joint Force Command Brunssum as the chief of intelligence, surveillance and reconnaissance. (U.S. Air Force photo by Joshua Conti)