Hokie,
My understanding is that an AGR job carries a "green" ID card and is full-time active duty military. You would be allowed 5 years per USERRA, assuming that you have not used any of your military leave. If you've got enough points to put you within 4-5 years of an AD retirement, go get an AGR job and get your retirement and head back to the airline when it's done. It may sound disloyal, but you are a number to your airline. If your number comes up, they will furlough you. It's business, don't take it personal. You are protecting your family via a legal, federally protected program. Tech/ARTs from what I understand, is not AD. You would be Federal Civil Service and not on Mil. I know some guys that deferred recall and kept their ART jobs when the airlines called them back. Good luck.
MBB