Floodlights slice through the night sky behind the Branch Davidian compound near Waco, Texas, in this April 15, 1993, file photo. Attorney General Janet Reno pledged Thursday, Aug. 26, 1999, that a new investigation of the Waco, Texas, siege will "get to the bottom" of how FBI agents used potentially flammable tear gas grenades against her wishes and why the bureau took six years to admit it. (AP Photo/File)