A Special Tactics Airman is missing after falling from a C-130 during a training exercise over the Gulf of Mexico.

The unintentional drop took place on the morning of November 5. The Air Commando, whose name hasn’t been released by the Air Force Special Operations Command (AFSOC), was scheduled to participate, alongside fellow operators, in a static-line parachute jump. While the aircraft was approaching the designated drop zone, approximately four miles south of Hurlburt Airfield, the Air Commando fell from the aircraft under unknown circumstances.

Almost immediately, the search-and-rescue effort began. It now encompasses a 700 square mile area (from Fort Walton Beach to Pensacola).

According to AFSOC, as of November 6, the following units are involved in the search-and-rescue operation.