It looks like it's a Gulfstream 5 operated by the U.S.A.F. In the past few days it has flown from D.C. - Kansas, back to D.C. from there to Germany then Dubai and back to Germany and now returning to the U.S. https://www.ads-b.nl/aircraft.php?id_aircraft=11430242&selectmove=day&movedate=2021-01-08
(post is archived)