a military base is one of those places where you leave your rights at the door before you enter.
Actually, that's not correct as a technica matter ¬*- the rights are still there, though the circumstances often allow for more "reasonable regulation."
The facts of this case have yet to come out so its hard to say what actually happenned - but I have personally declined a car inspection at¬*the Fort Belvoir Gate and just was told to turn around and leave - no big deal, and this was after Sept. 11, 2001.¬*
However there is a inspection doctrine re airports that once you submit to air travel screening nspections, the government may seize you until the inspection is done - the idea is that if a bad guy is testing security, and the scanner spots somthing weird in the bag, the bad guy can't just say, "oops, changed my mind, I'm not flying today, see you later."
if you want to balk at an airport inspection of your person and bags, you need to leave the line at the TSA screening point early enough that you don't get caught up in this doctrine - maybe the military is trying to apply this doctrine as bases, but frankly, this seems over bord - for example, what if while you are in line to ghet on post uyou relaize "oops, did mywife leave the shotgun in the trunk again?¬* Maybe I better tunr around and go back off post to check before I try to get thru the gate."
That would seem reasonable and prudent to me, especially since someties the no weapons signs appear just before you get to the gate guard point.