1) You will not be scrapping bird sh!t of any runway anywhere. Unless you really screwed up, broke laws, etc. Think of it as ironic punishment.
2) Anyone who believe that military personnell are ordered to fire on unarmed civilians is an idiot. Period. The US military follows the Geneva convention more closely than any other nation.
3) I'd say job security is bar none, but the USAF is cutting many career fields right now. We're thousands of people over our congressional mandated max. Look up 'Force Shaping' for more information. Not all career fields are overmanned though, Medical squadrons and Security Forces are usually undermanned and always looking for people. EGRESS and Propulsion/Engine shopts usually seem to be undermanned at my base as well, but I am not sure how they fare AF wide.
4) Coming in with college creds will get you a little more rank from the get go, usually E2 or E3. Not too much, but its nothing to sneer at either.
5) There is a lot of beaucratic redtape. It is a goverment organization, after all.
6) Hurry up and wait.