Missing FBI Agent Armed and Suicidal

For those of you who've read Chapter 22 of Cryptoscatology ("Collaborating With the Dead"), you might find this recent L.A. Times news story a tad intriguing.  Titled "Missing FBI Agent Armed and Suicidal, Police Believe," the article offers a suggestive parallel to the Steve Semon story related at the end of Cryptoscatology.  I wonder what specific case this "national security" specialist was working on when he suddenly went missing....