Space Shuttle Columbia: This image is a view of the underside of the space shuttle Columbia during its entry from mission STS-107 on Feb. 1, 2003, as it passed by the Starfire Optical Range, Directed Energy Directorate, Air Force Research Laboratory, Kirtland Air Force Base, N. M. The space shuttle Columbia image was taken at approximately 7:57 a.m. CST (1357 GMT). This image was received by NASA as part of the space shuttle Columbia accident investigation and is being analyzed.