Military secrecy tends to come with a plausible cover story. Unless you're going to be writing control software for Los Alamos, in which case military and civilian use tends to overlap somewhat.
Yep, Los Alamos employs both civilian and military, and they do overlap at times. But there is still a high level of secrecy. My husband was working there once with a high security clearance. His dad still works for the lab, albeit now from home, but he also has certain security standards to uphold. And his mom and stepmom also work there. I don't know what his stepmom does, but his mom is in explosives, and she is almost NEVER allowed to tell us what she is up to. ;)
And I'm speaking from experience. I know all these people, and get the info firsthand. In fact, when the Lee thing exploded, it scared some of his family because they not only knew him, they worked with him. Fortunately, the investigation into John's family's background turned up nothing connecting them in the spying issue.
Nightowl >8#