Administration and Leadership | Slideshow

Oklahoma City Bombing Anniversary

01 / 08

Oklahoma City Bombing 20th Anniversary

FILE - In this May 5, 1995 file photo, a large group of search and rescue crew attends a memorial service in front of the Alfred P. Murrah Federal Building in Oklahoma City. The blast killed 168 people _ including 19 children _ injured hundreds more and caused hundreds of millions of dollars in damage to structures and vehicles in the downtown area. (AP Photo/Bill Waugh, Flle)

02 / 08

Oklahoma City Bombing 20th Anniversary

FILE - In this April 19, 1995 file photo, Federal Alcohol, Tobacco and Firearms (ATF) and FBI agents survey the damage to the Alfred Murrah Federal Building in Oklahoma City. The blast killed 168 people _ including 19 children _ injured hundreds more and caused hundreds of millions of dollars in damage to structures and vehicles in the downtown area. (AP Photo/Rick Bowmer,File)

03 / 08

Oklahoma City Bombing 20th Anniversary

FILE - In this April 20, 1995 file photo, rescue crews work together as they climb over areas of debris at the Alfred P. Murrah Federal Building in Oklahoma City, searching for victims of the deadly car bombing. The blast killed 168 people _ including 19 children _ injured hundreds more and caused hundreds of millions of dollars in damage to structures and vehicles in the downtown area. (AP Photo/David J. Phillip,Pool)

04 / 08

Oklahoma City Bombing 20th Anniversary

FILE - In this April 20, 1995 file photo, The Alfred Murrah Federal Building in downtown Oklahoma City is the center of attention as rescue workers continue digging through the rubble after the deadly car bombing. The blast killed 168 people _ including 19 children _ injured hundreds more and caused hundreds of millions of dollars in damage to structures and vehicles in the downtown area. (AP Photo/J.Pat Carter)

05 / 08

Oklahoma City Bombing 20th Anniversary

FILE - In this April 19, 1995 file photo, medical assistants, Janet Froehlich, left, Wilma Jackson and Kerri Albright run from the Alfred Murrah Federal Building after being told another bomb device had been found in Oklahoma City. The blast killed 168 people _ including 19 children _ injured hundreds more and caused hundreds of millions of dollars in damage to structures and vehicles in the downtown area. (AP Photo/David J. Phillip)

06 / 08

Oklahoma City Bombing 20th Anniversary

FILE - In this April 19, 1995 file photo, an injured woman holds a child following a blast that destroyed a large portion of the Alfred Murrah Federal Building in downtown Oklahoma City. The blast killed 168 people _ including 19 children _ injured hundreds more and caused hundreds of millions of dollars in damage to structures and vehicles in the downtown area. (AP Photo/David Longstreath)

07 / 08

Oklahoma City Bombing 20th Anniversary

FILE - In this April 19, 1995 file photo, an unidentified man holds a towel to his face following an explosion Wednesday April 19, 1995, at the Alfred Murrah Federal Building in downtown Oklahoma City. At least 19 people are reported dead from the blast. The blast killed 168 people _ including 19 children _ injured hundreds more and caused hundreds of millions of dollars in damage to structures and vehicles in the downtown area. (AP Photo/David Longstreath)

08 / 08

Oklahoma City Bombing 20th Anniversary

FILE - In this April 19, 1995 file photo, a victim of the explosion that ripped a nine-story hole in the the Alfred Murrah Federal Building Wednesday, April 19, 1995, in downtown Oklahoma City, is helped from the scene. The blast killed 168 people _ including 19 children _ injured hundreds more and caused hundreds of millions of dollars in damage to structures and vehicles in the downtown area. (AP Photo/J. Pat Carter)