DIA won an award at the end of the Cold War for down-sizing to fit the new reality.

It retrained a lot of its Cold Warriors into new specialties, etc., and let many more retire. It "right-sized" for peacetime steady-state.

By the time Bosnia rolled around, DIA ops was stretched to the max, and Bosnia, as it turns out, was an easy case.

Well, multiply that by Afghanistan and Iraq, and you get a pretty decent idea of how pressed the organization is.

Now -- figure out the appropriate solution.
COA 1. This is an aberration, so best to contract for the short (even 10+ years) term. Nation can't afford a longterm plus-up.
COA 2. Admit that this is the new reality. Hire permanently a workforce needed to last well into the future. Suck up the permanent costs of training, retirement, health care, etc. Change personnel laws so that civilians can be retained past retirement, sent to combat zones, etc. We are the government. We can cover future costs with future taxation.

The issues cannot be reduced to a sound bite.