BRUCEVILLE-EDDY, Texas (AP) - An Army helicopter carrying seven soldiers crashed and burned in the fog Monday after hitting a support wire on a TV transmission tower whose warning lights had been knocked out in a storm last week, officials said. Everyone aboard was killed.

The UH-60 Black Hawk, bound for the Red River Army Depot in Texarkana, went down in a field about 30 miles northeast of Fort Hood. The fog was so thick when emergency crews arrived that they could not see more than halfway up the tower, authorities said.

The helicopter was headed to check out equipment being readied for use in Iraq, said Lt. Col. Jonathan Withington, spokesman for the Fort Hood-based 4th Infantry Division. The names of the victims, all from Fort Hood, were not immediately released.

Rock Eicke, who lives a quarter-mile from the crash site, said he was getting ready for work at about 7 a.m. when he was startled by a loud sound. He looked out his window and saw the helicopter hit the ground.

"All of the sudden I just saw a big ball of fire erupt from the ground and then boom, an explosion," Eicke said. "It was burning to the point that we couldn't have done anything."

The main part of the fuselage went down in a field about 200 to 300 yards from the tower, said McClennan County constable Ken Brown. He said he saw the tail section, parts of the rotor and other helicopter parts between the tower and the field.

The helicopter hit a wire that stabilizes the 1,800-foot tower, said Jerry Pursley, general manager of Waco-Temple-Killeen station KXXV, which owns the tower. The tower itself was not hit, he said.

The tower's lights stopped working early last week after strong storms hit the area, Pursley said. He said the station notified the Federal Aviation Administration. The agency's spokesman in Texas did not immediately return a call for comment.

The Black Hawk, which the military began using in 1979, is the Army's main troop transport helicopter. It can carry 15 people and usually is flown by a crew of four.

In November 2003, 17 soldiers were killed when two Black Hawk helicopters crashed in Iraq, apparently as a result of enemy fire.