Pipe Bomb Contractor Possible Former Nuke Submariner?

Could the procurement engineer (responsible for evaluating equipment purchases for the plant) caught with a pipe bomb be an ex-submariner?
Roger W. Hurd, 61, of Hartsville, S.C., said he was unaware a pipe bomb was in the bed of his in maroon Ford pickup truck.

Hurd, a Navy veteran who served during Vietnam, had a contractor's security clearance to access the plant without escort. The utility would not disclose Hurd's employer.

Here is what had occurred Friday:
Pipe Bomb Locks Down Ariz. Nuke Plant - WINTERSBURG, Ariz. (AP) — Security officials at the nation's largest nuclear power plant detained a contract worker with a small pipe bomb in the back of his pickup truck Friday, authorities said. The Department of Homeland Security said there was no known terrorism link to the incident at Palo Verde Nuclear Generating Station west of Phoenix. The worker, Roger William Hurd, told investigators he didn't know how the bomb got in his truck and was released Friday afternoon. Palo Verde officials said they pulled Hurd's security clearances and won't allow him back until they know more about what happened. source

Palo Verde's three nuclear reactors produce 3,900 megawatts, enough electricity to serve up to 4 million homes in Arizona, California, New Mexico and Texas. Located in Wintersburg, the plant is about 50 miles west of downtown Phoenix. source

Is Hurd an ex-nuclear submariner (many of whom went to work in the civilian nuclear power industry)? Or did he gravitate to nuclear power as a post Navy choice? If Hurd was not a submariner, was he a nuclear power school instructor? Here are the approximate, raw odds: ex-submariner - 9%; former navy nuclear power school instructor 13%; all other possibilities 78%. Answer: Unlikely.

If anyone out there served in the Navy during Nam with one Roger W. Hurd, 61, please apprise us of his military capacity at the time.

On Friday, Capt. Paul Chagolla of the Maricopa County Sheriff's Office said, "There's no information to indicate that there's domestic terrorism at hand."