If the pick up point is within 100 miles from home, sign up with AAA Premium a week minimum before pickup. Then get to the base early, before your arranged pickup time and call AAA and tell them your truck (true, you bought it) won't start (also true) tell them you're sure it's not a jump start issue and you want it towed . Tell them it's on base and their contract driver needs to be familiar with getting past the instant background check .Tell them the tow truck needs to be able to handle a Hummer H1 (sort of true).
Worked for me! I got my M998 home for $125 plus a nice fat tip for the driver considering the extra time he spent getting on base and probably lost a call while fiddling with me so long .
Bulldogger