(CNN) -- Four people were rescued after a U.S. Navy helicopter went down off the Virginia coast, the Navy said Wednesday.
The remaining crew member was being sought, it said in a tweet.
The helicopter is an MH-53E, the Navy said on Twitter. It initially misidentified the craft as a CH-53E.
The Navy tweeted that the craft went down off the coast of Norfolk.
The MH-53E Sea Dragon carries no weapons. It has two pilots and a crew of one to six airmen, depending on its mission, according to the Navy.
There are 31 of the aircraft in operation, it said.