WASHINGTON (AP) _ NASA on Sunday named a retired Navy admiral who helped investigate the USS Cole terrorist bombing to lead an independent investigation of the space shuttle Columbia accident. All theories about what happened are being explored, officials said.
Harold W. Gehman Jr. will lead a special government commission that will sift through the Columbia wreckage being gathered from across Texas and Louisiana and trucked under tight security to an Air Force base for analysis.
``We're securing all the debris and assuring that we look at every possible angle of what could have caused this horrible accident,'' NASA chief Sean O'Keefe said.
``We are making sure that we don't take any pet theory or any one approach and favoring over one or another,'' O'Keefe told ``Fox News Sunday.''
Officials said that the debris being collected from far flung areas of Texas and Louisiana are being trucked to Barksdale Air Force Base in Louisiana for inspection and analysis.
A team of 20 engineering experts from the United Space Alliance, a key contractor for NASA's shuttle program, is being sent to the base to examine the debris. Another 50-man team is on standby, officials said.
Though FBI agents are assisting in the recovery of human remains and fuselage, senior law enforcement officials reiterated Sunday there was no evidence of foul play and that the investigative focus was on a mechanical or structural problems.
O'Keefe said Gehman is ``well versed in understanding exactly how to look about the forensics in these cases and coming up with the causal effects of what could occur,'' O'Keefe told ABC's ``This Week.''
O'Keefe described the commission as ``an independent objective board'' and said Gehman would be arriving in Shreveport, La., with a team on Sunday afternoon.
``We're going to find out what led to this, retrace all the events ... and leave absolutely no stone unturned in that process,'' O'Keefe said.
In addition to the Gehman commission, NASA will conduct its own investigation, as will the House Science Committee, whose chairman is Rep. Sherwood Boehlert, R-N.Y. His committee oversees NASA.
``The NASA investigation will focus more on the technical aspects,'' Boehlert told ABC. ``We have to be concerned about the policy aspects and what is the future of human space flight.''
Hearings are expected in the Senate Commerce, Science and Transportation Committee, said Sen. Sam Brownback, chairman of the subcommittee on science, technology and space.
``The key issue for us in Congress is why did it happen, how did it happen, how do we fix it and then how do we project on forward with manned space flight,'' said Brownback, R-Kan. ``We need to continue that for the vision of the country and the vision of the world.''
Gehman was commander in chief of U.S. Joint Forces Command until his retirement in the summer of 2000.
The Cole was refueling in Aden harbor in Yemen on Oct. 12, 2000, when a small boat sidled up to the 505-foot destroyer and detonated a load of explosives. The blast ripped a hole 40 feet high and 40 feet wide in the hull of the $1 billion warship and killed 17 sailors.
It was the first time terrorists had successfully attacked a U.S. Navy ship, and the Cole commission said in its report in January 2001 that the bombers had found a ``seam in the fabric'' of the Navy's system of self-protection.
Joining Gehman on the commission are:
_Rear Adm. Stephen Turcotte, commander of the U.S. Naval Safety Center in Norfolk, Va.
_Maj. Gen. John L. Barry, director of plans and programs for Headquarters Air Force Materiel Command at Wright-Patterson Air Force Base in Ohio.
_Maj. Gen. Kenneth W. Hess, commander and Air Force chief of safety at Kirtland Air Force Base in New Mexico.
_James N. Hallock, chief of the aviation safety division for the Transportation Department.
_Steven B. Wallace, director of the Federal Aviation Administration's office of accident investigation.
_Brig. Gen. Duane Deal, commander of the 21st Space Wing at Peterson Air Force Base in Colorado.
Following the 1986 explosion of the space shuttle Challenger, President Reagan appointed a 13-member commission headed by former Secretary of State William P. Rogers to investigate the accident.
That commission reported four months later that an O-ring seal leaked in the right booster rocket. That allowed hot gases to burn through the bracket securing the booster to the shuttle, rupturing the shuttle tank.
The shuttle fleet was grounded for nearly three years while changes were instituted and repairs made.