"Joined up in 1970 for the Vietnam war, actually. Retired in 96. Thought I was done. Then they pulled me out of retirement so I could join a different unit out of Cheyenne Mountain. Been doing that ever since. Only this time instead of fighting bad guys on Earth, I do it on other planets." He shrugged. It was still a little surreal for Jack to talk candidly about the Stargate Program. He didn't give full disclosure, but this was enough of a weird place that the rules seemed bendable.