This is a photo collection curated by AP photo editors.
FILE - Terry Nichols, wearing a bullet-proof vest, is escorted by U.S. marshals as he leaves the federal courthouse in Wichita, Kansas, on April 26, 1995. (AP Photo/Steve Rasmussen, File)
FILE - Timothy James McVeigh, identified as a suspect in the bombing of the Oklahoma City Federal building, is lead out of the Noble County Courthouse in Perry, Okla., by state and federal law enforcement officials on April 21, 1995. (AP Photo/John Gaps III, File)
FILE - Davetta Green comforts her son, James Green, as a nurse removes an I.V. at Presbyterian Hospital in Oklahoma City on April 20, 1995. James was injured when he and his mother were in the YMCA building across the street from the Alfred P. Murrah Federal Building when it was bombed. (AP Photo, File)
FILE - Randy Ledger, who was severely injured by the bomb blast at the Alfred P. Murrah Federal Building, writes a note from his bed in the intensive care unit of Presbyterian Hospital in Oklahoma City on April 20, 1995, as his sister, Linda Halford, watches. (AP Photo/Pat Sullivan, File)
FILE - Karen Ellison looks through a chain link fence at a memorial service for rescue workers and volunteers at the Alfred P. Murrah Federal Building in Oklahoma City on May 5, 1995. (AP Photo J. Pat Carter, File)
FILE - Officials stand near the Alfred P. Murrah Federal Building as workers place flowers and memorial items at the scene of the explosion in Oklahoma City on May 5, 1995. (AP Photo/J. Pat Carter, File)
FILE - Family members wait for word about their missing relatives on April 19, 1995 at the First Christian Church in Oklahoma City, after a truck bomb exploded in the Alfred P. Murrah Federal Building. (AP Photo/J. Pat Carter, File)
FILE - An unidentified woman calls out to friends as she waits for treatment following a bomb blast at the Alfred P. Murrah Federal Building in downtown Oklahoma City, April 19, 1995. (AP Photo/David Longstreath, File)
FILE - Television reporters report from the bombed Alfred P. Murrah Federal Building, back right, on April 20, 1995, in Oklahoma City. (AP Photo/Pat Sullivan, File)
FILE - A man stands in the blown-out doorway of a downtown business a few blocks from the Alfred P. Murrah Federal Building, which was destroyed by a massive bomb, on April 19, 1995, in Oklahoma City. (AP Photo/Rick Bowmer, File)
FILE - The streets surrounding the Alfred P. Murrah Federal Building in Oklahoma City are swamped with emergency vehicles and personnel on April 20, 1995, after a bomb tore through the building. (AP Photo/David J. Phillip, File)
FILE - A woman comforts an injured child following an explosion at the Alfred P. Murrah Federal Building in Oklahoma City on April 19, 1995. (AP Photo/David Longstreath, File)
FILE - Medical assistants Janet Froehlich, Wilma Jackson and Kerri Albright run from the Alfred P. Murrah Federal Building after being told another bomb device had been found on April 19, 1995, in Oklahoma City. (AP Photo/David J. Phillip, File)
FILE - Rescue workers dig through the rubble from the Alfred P. Murrah Federal Building explosion in downtown Oklahoma City on April 20, 1995. (AP Photo/J.Pat Carter, File)
FILE - An unidentified man, his face covered with blood, looks at the bombed Alfred P. Murrah Federal Building in Oklahoma City on April 19, 1995. (AP Photo/David Longstreath, File)
FILE - This aerial view shows the destroyed north side of the Alfred P. Murrah Federal Building in Oklahoma City after a massive bomb blast, April 19, 1995. (AP Photo, File)
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FILE - Terry Nichols, wearing a bullet-proof vest, is escorted by U.S. marshals as he leaves the federal courthouse in Wichita, Kansas, on April 26, 1995. (AP Photo/Steve Rasmussen, File)
FILE - Timothy James McVeigh, identified as a suspect in the bombing of the Oklahoma City Federal building, is lead out of the Noble County Courthouse in Perry, Okla., by state and federal law enforcement officials on April 21, 1995. (AP Photo/John Gaps III, File)
FILE - Davetta Green comforts her son, James Green, as a nurse removes an I.V. at Presbyterian Hospital in Oklahoma City on April 20, 1995. James was injured when he and his mother were in the YMCA building across the street from the Alfred P. Murrah Federal Building when it was bombed. (AP Photo, File)
FILE - Randy Ledger, who was severely injured by the bomb blast at the Alfred P. Murrah Federal Building, writes a note from his bed in the intensive care unit of Presbyterian Hospital in Oklahoma City on April 20, 1995, as his sister, Linda Halford, watches. (AP Photo/Pat Sullivan, File)
FILE - Karen Ellison looks through a chain link fence at a memorial service for rescue workers and volunteers at the Alfred P. Murrah Federal Building in Oklahoma City on May 5, 1995. (AP Photo J. Pat Carter, File)
FILE - Officials stand near the Alfred P. Murrah Federal Building as workers place flowers and memorial items at the scene of the explosion in Oklahoma City on May 5, 1995. (AP Photo/J. Pat Carter, File)
FILE - Family members wait for word about their missing relatives on April 19, 1995 at the First Christian Church in Oklahoma City, after a truck bomb exploded in the Alfred P. Murrah Federal Building. (AP Photo/J. Pat Carter, File)
FILE - An unidentified woman calls out to friends as she waits for treatment following a bomb blast at the Alfred P. Murrah Federal Building in downtown Oklahoma City, April 19, 1995. (AP Photo/David Longstreath, File)
FILE - Television reporters report from the bombed Alfred P. Murrah Federal Building, back right, on April 20, 1995, in Oklahoma City. (AP Photo/Pat Sullivan, File)
FILE - A man stands in the blown-out doorway of a downtown business a few blocks from the Alfred P. Murrah Federal Building, which was destroyed by a massive bomb, on April 19, 1995, in Oklahoma City. (AP Photo/Rick Bowmer, File)
FILE - The streets surrounding the Alfred P. Murrah Federal Building in Oklahoma City are swamped with emergency vehicles and personnel on April 20, 1995, after a bomb tore through the building. (AP Photo/David J. Phillip, File)
FILE - A woman comforts an injured child following an explosion at the Alfred P. Murrah Federal Building in Oklahoma City on April 19, 1995. (AP Photo/David Longstreath, File)
FILE - Medical assistants Janet Froehlich, Wilma Jackson and Kerri Albright run from the Alfred P. Murrah Federal Building after being told another bomb device had been found on April 19, 1995, in Oklahoma City. (AP Photo/David J. Phillip, File)
FILE - Rescue workers dig through the rubble from the Alfred P. Murrah Federal Building explosion in downtown Oklahoma City on April 20, 1995. (AP Photo/J.Pat Carter, File)
FILE - An unidentified man, his face covered with blood, looks at the bombed Alfred P. Murrah Federal Building in Oklahoma City on April 19, 1995. (AP Photo/David Longstreath, File)
