Shuttle Debris

The shuttle flies apart in the sky over Texas.

Radar image shows the path of shuttle's debris above Texas.

A charred piece debris believed to be from the space shuttle Columbia lies on the patio of a home in Nacogdoches, Texas, Saturday, Feb. 1, 2003.

National Guard reservist PFC Burris stands guard over what is believed to be a piece of debris from the space shuttle Columbia along North Street, Saturday afternoon, in Nacogdoches, Texas.

Cherokee County Chief Deputy Johnathan Rhodes, left, Dylan Marksburg and his wife Vikki Marksburg, along with Michael Davis and his wife Melissa Davis, right, view a piece of debris from the space shuttle Columbia on highway 84 near Maydell, Texas, Saturday, Feb. 1, 2003.

Members of C Battery 1st of the 133rd National Guard detachment in Lufkin, Texas, examine the area around a fragment believed to be a piece of the space shuttle Columbia Saturday, Feb. 1, 2003, in Nacogdoches, Texas.

Stan Melasky, left, and his brother Steve Melasky look over a piece of debris, believed to be from the space shuttle Columbia, that fell on their farm near Douglass, Texas, Saturday, Feb. 1, 2003.

Tommy Peltier, of Houston, stands next to debris from space shuttle Columbia that fell near San Augustine, Texas, Sunday, Feb. 2, 2003. Peltier said he found shuttle debris on both his father's and neighbor's property.

Larry Epps talks about a piece of debris from the space shuttle Columbia, shown in foreground, near his home by San Augustine, Texas, Sunday, Feb. 2, 2003. Epps said he found several pieces of debris on his property. Authorities used horses and satellite gear Sunday to search for more scorched pieces of space shuttle Columbia across the Texas and Louisiana countryside.

An unknown person has placed an American flag next to a piece of debris from the space shuttle Columbia, which sits in the median of a road in Anderson County, Texas, Saturday, Feb. 1, 2003.

Jimmy Brown kneels next to a piece of debris, believed to be from the space shuttle Columbia, which fell in his yard in Bronson, Texas, Saturday, Feb. 1, 2003. Brown said he heard a loud roar, his house shook and when he looked outside he found this large piece of smoldering debris in the yard.

A helmet from mission STS-107 is seen in this image from television, Sunday, Feb. 2, 2003, in San Augustine, Texas. Remnants of the space shuttle Columbia remained strewn across east Texas and Louisiana Sunday, as authorities probed possible causes for the tragedy.