File photo of a road sign along I-30 in Dallas, Texas asking the public to call in locations of space shuttle Columbia debris

 
File photo of a road sign along I-30 in Dallas, Texas asking the public to call in locations of space shuttle Columbia debris
A road sign along I-30 in Dallas, Texas asks the public to call in locations of space shuttle Columbia debris in this file photo from February 1, 2003. Many parts of the shuttle along with human remains were found scattered across north Texas. REUTERS/Rick Wilking/Files
Tags: Texas