Getting those extra 100,000 bodies into the Army

I've commented on this before, but it's worth repeating. The DLC, Joe Lieberman and John McCain have all claimed that the US can add 100,000 bodies to the Army, no problem, no fuss, no difficulty. If that's the case, why are recruiters going to such lengths to sign up troops?!?!?!
Prospective soldiers are being told that:

"Nobody is going over to Iraq anymore?" one student asks a recruiter.

"No, we're bringing people back," he replies.

"We're not at war. War ended a long time ago," another recruiter says.

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One Colorado student taped a recruiting session posing as a drug-addicted dropout.

"You mean I'm not going to get in trouble?" the student asked.

The recruiters told him no, and helped him cheat to sign up.

Recruiters are desperate to sign people up because there's a severe shortage of new bodies to fill billets and there's very little in the way of sensible reasons to go over there, regardless of how patriotic folks may be. The question for the DLC, Lieberman and McCain then is WHERE are these extra 100,000 bodies going to come from?