An Army Reserves helicopter on a night training mission crashed into Lake Ellsworth and five crew members were pulled to safety aboard a fishing boat. A sixth was missing, authorities said Friday.

The pilot was wearing night goggles for an over-water training exercise when the UH-1 helicopter crashed Thursday night, said Fort Sill spokesman Maj. Chuck Pope.The helicopter was part of 374th Air Ambulance Company based in Little Rock, Ark., Pope said. The lake is about 15 miles north of the Army post.