BREAKING: Another near collision on a runway in Chicago.

[Ocelot II]

57. Pilots train for those sorts of incidents.

It's a regular thing during simulator training. They wouldn't have been happy about it but they didn't freak out. The crew on the ground that crossed the runway when they were told to hold short would have been pretty rattled, though, when they saw the Southwest plane fly over them, and then when they were told to call the tower. No pilot wants to make that phone call.