Oklahoma City Firefighters helped police with a recovery operation near Northwest Expressway and Piedmont Road.OKC Police ...

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. Credit: AP/Anonymous Timothy McVeigh and Terry ...

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. (Anonymous / AP) ...

Former President Clinton visited Oklahoma City to honor those who were killed and affected by the bombing 30 years ... An aerial view of the damage after a truck bomb ripped the building apart. AP. 6.

This aerial view shows the destroyed north side of the Alfred P. Murrah Federal Building in Oklahoma City after a massive bomb blast carried out by Timothy McVeigh April 19, 1995.

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) AP ...