The image was taken about a week after the Chinese balloon entered U.S. airspace, causing alarm.
North American Aerospace Defense Command (NORAD) then sent U-2 jets to identify and track the unusual machine.
U-2 planes kept an eye on the balloon as it bobbed across the country.
Photo: United States Department of Defense
They have called it part of a larger Chinese surveillance-balloon program.
(Photo: U.S. Air Force/ Staff.
A U-2 Dragon Lady flying over the airfield at Beale Air Force Base, California, April 12, 2018. (Photo: U.S. Air Force/ Staff. Sgt. Ramon A. Adelan)
