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

🇺🇸 N408AN - Airbus A321 253NXSL - American Airlines AAL3021/AA3021, Harry Reid (LAS) to Philadelphia (PHL) - 4.1 mi away @ 36500 ft, heading E at 602 mph. Spotted 12x before! [10:02:24 PM CDT] #A4CA66 #N408AN #A21N #AMERICAN #AAL3021 #AA3021 #ADSB #ADSBbot