Transportation Safety Administration

If you’re a civilian who wants to become an air traffic controller, you can only get trained in one place: the Mike Moroney Aeronautical Center in Oklahoma City. Amid a nationwide shortage of air traffic controllers, U.S. Secretary of Transportation Sean Duffy is trying to “supercharge” the number and quality of trainees coming through the facility.

Three Texas airports ranked in the top 10 for the number of guns the Transportation Security Administration discovered at airport checkpoints last year....