FBI agent missing, possibly armed, suicidal

This image provided by the Burbank Police Department shows an undated photo of FBI agent Stephen Ivens. Ivens was last seen by family members Thursday evening, KABC-TV reported. He left his Burbank home the next morning on foot and hasn't been seen since, FBI officials said at a news conference Saturday May 12, 2012. (AP Photo/Burbank Police Department)

May 13, 2012 7:20:43 AM PDT
Law enforcement officers in Southern California have launched a massive search in rugged mountain terrain for a missing FBI agent who was said to be despondent and possibly suicidal.