Curt is wrong, VERY wrong.
I hold a TS in the USAF as Enlisted Aircrew - Radio Op. Any minor debts wont ding you at all. Your security manager will just want to see that you are honest on your debts and are making a payment plan to solve them.
About 75% of the jobs in the Air Force require at least a Secret Security Clearance, and to say you wont get one over minor debts is wrong.
If all you have is that, you will be just fine. I came in with quite a few, and am okay.