๐บ๐ธ N8855Q - Boeing 737MAX 8 - Southwest Airlines SWA1928/WN1928, Harry Reid (LAS) to Baltimore/Washington Thurgood Marshall (BWI) - 4.6 mi away @ 39425 ft, heading ENE at 515 mph. Spotted 95x before. [12:02:59 PM CDT]
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Map of the St. Louis area showing the position and track of the aircraft described in the post.