Map of the St. Louis area showing the position and track of the aircraft described in the post.

🇺🇸 84-0079 - Gates C-21A - United States Air Force SPAR211 - 3.8 mi away @ 32450 ft, heading WNW at 259 mph. Spotted 6x before! [12:44:48 PM CST] #AE0171 #reg_840079 #LJ35 #SPAR211 #military #ADSB #ADSBbot