WASHINGTON (AP) — The Trump administration has begun firing several hundred Federal Aviation Administration employees, upending staff on a busy air travel weekend and just weeks after a January fatal midair collision at Ronald Reagan Washington National Airport.

Emails to air-traffic controllers, according to a second air-safety union president, came “from an ‘exec order’ Microsoft email address” — not a government email address.

The National Air Traffic Controllers Association (NATCA) is reviewing the Federal Aviation Administration (FAA) and its workforce reductions amid concerns about air safety following the deadliest