Sept. 28, 2020 Operation Deep Freeze kicks off 2020-2021 main season The U.S. military kicked off the 2020-2021 season of Operation DEEP FREEZE (ODF), when a U.S. Air Force Globemaster III, assigned to Joint Base Lewis-McChord, Wash., completed three winter fly-in, or WinFly missions, to McMurdo Station, Antarctica, a key research and operations facility for the