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

🇺🇸 N7858A - Boeing 737NG 79P/W - Southwest Airlines SWA3999/WN3999 (IND-AUS-SMF-BUR) - 4.5 mi away @ 36525 ft, heading SW at 430 mph. Spotted 49x before! [02:07:36 PM CST] #AAA68A #N7858A #B737 #SOUTHWEST #SWA3999 #WN3999 #ADSB #ADSBbot