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

🇺🇸 62-3510 - Boeing KC-135R - United States Air Force - 3.6 mi away @ 27000 ft, heading ENE at 433 mph. Spotted once before! [12:14:25 PM CST] #AE068B #reg_623510 #K35R #military #ADSB #ADSBbot