A Southwest Airline jet heading to Las Vegas from Southern California took a dramatic plunge shortly after takeoff Friday in response to an alert about a nearby plane, sending some passengers flying out of their seats and injuring two flight attendants.

The Boeing 737 jet dropped hundreds of feet in a little over 30 seconds during a flight on Friday, according to a flight tracking website.

A Southwest Airlines flight dropped several hundred feet in a matter of seconds to avoid a midair collision, after the Federal Aviation Administration said pilots were alerted to another aircraft's presence in the area.