I was in Navy ROTC in college and upon graduation, I was accepted to the Naval Reactors program and spent my entire active duty time stationed at the Washington Navy Yard working on the design, refueling, maintenance, etc. of the nuclear reactors on Los Angeles- and Ohio-class submarines.
Also, for any vets not yet aware of this, check out this thread as it offers free seeds, once a year, to vets (when the sign ups are open).