pipe bomb puts arizona nuclear plant on lockdown
{"Image ImageDescription": "One of the three units of the Palo Verde Nuclear Generating Station shown here Wednesday, Oct. 31, 2007 in Wintersburg, Ariz.  A contract employee attempting to enter the facility was caught at a security checkpoint  with an explosive device causing a lockdown of the Palo Verde Nuclear Generating Station Friday, Nov. 2, 2007 in Wintersburg, Ariz  (AP Photo/Ross D. Franklin)", "Image Software": "Google"}