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

🇺🇸 N8756S - Boeing 737MAX 8 - Southwest Airlines SWA3514/WN3514 (MDW-LAX-TUS) - 4.1 mi away @ 35700 ft, heading WSW at 492 mph. Spotted 45x before! [06:47:24 PM CDT] #AC0C24 #N8756S #B38M #SOUTHWEST #SWA3514 #WN3514 #ADSB #ADSBbot