MILITARY

Base Names 4 Soldiers Killed in Helicopter Crash at Washington Army Base

Chief Warrant Officer Lucas Daniel Sigfrid, a native of Alabama, is seen in an undated photo provided by the U.S. Army. Sigfrid is one of four Army aviators killed Monday, Dec. 12, 2011 when two helicopters crashed during training at a Washington state base.

Chief Warrant Officer Lucas Daniel Sigfrid, a native of Alabama, is seen in an undated photo provided by the U.S. Army. Sigfrid is one of four Army aviators killed Monday, Dec. 12, 2011 when two helicopters crashed during training at a Washington state base.  (AP)

Joint Base Lewis-McChord has released the names of the four Army aviators killed when two helicopters crashed during training at the Washington Army base.

They are Capt. Anne M. Montgomery, a native of North Dakota; Chief Warrant Officer Frank A. Buoniconti, a native of Colorado; Chief Warrant Officer Joseph S. Satterfield, a native of Alaska; and Chief Warrant Officer Lucas Daniel Sigfrid, a native of Alabama.

An investigation into the cause of the accident by a team from Fort Rucker, Ala., began Wednesday. Lt. Col. Gary Dangerfield says the investigation could take as long as a year.

The two-seat reconnaissance choppers crashed after 8 p.m. Monday in the southwest training area of the sprawling base, killing all four on board.