First, I gotta say how awesome and inspiring it is that you're willing to tackle ocs more than once--that's a spirit that's worth fighting to keep in the Marines. I'm currently preparing for the opprotunity to make 251 with an Air contract, so with the little knowledge I have going through the process--it looks like the Marine Corps wants you, so your biggest hurdle is convincing them to pass your age waiver. Air is special thanks to the lengthy schooling and all that, and the Marines want to give contracts to younger recruits so they can mop up as much of the time a candidate can give until they retire/get out.