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

🇺🇸 N667DN - Boeing 757 232/W - Delta Air Lines DAL406/DL406 (ATL-BZN-ATL) - 3.7 mi away @ 31325 ft, heading NW at 461 mph. Spotted for first time! [12:14:01 PM CST] #A8CE92 #N667DN #B752 #DELTA #DAL406 #DL406 #ADSB #ADSBbot