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

🇺🇸 76-1604 - Boeing E-3G Sentry - United States Air Force - 3.5 mi away @ 31000 ft, heading NE at 543 mph. Spotted for first time! [04:53:04 AM CDT] #AE11DB #reg_761604 #E3TF #military #ADSB #ADSBbot