DES MOINES, Iowa (AP) — A U.S. Air Force Boeing 757 has made an emergency landing at the Des Moines International Airport after a windshield cracked during the flight. Airport Director of Operations Alan Graff says the plane landed safety Friday morning and all nine people on board left the jet safely.

The white unmarked jet landed around 9:30 a.m. after making a distress call seeking to divert its flight plan to land at the airport. Airport officials referred further questions to the Air Force. A public affairs officer at Joint Base McGuire-Dix-Lakehurst, N.J. couldn’t immediately provide further details on where the flight originated, where it was going or what caused the windshield to crack.