Hey, they are Marines - the weapon security part is easy, if the weapons were carried in the pax compartment. All Marines deplane with their weapons, form up in platoons, stack rifles (nice pyramid shape bundle of weapons, butt on deck, muzzles together in the air), two Marines stand rotating guard watch. We did this all the time when we were at PI, and again in my unit when we were on road marches with our weapons at Quantico and used the mess hall or other building facilities.

Absolute horse.... that they were treated this way