Bringing it in low and hot...
The colpiot signals the cargo handlers (fake shot):
They wait until that hand drops, then shove the cargo out (real shot).
Right on the money!
Now they have plenty of everything, including ammo, but they're ordered to march to a distant mountaintop- no promise of a pickup. Needless to say, they run into a scrap with the enemy, and by the time they reach the mountain, they've lost a great deal, including the radio. But the commander still has his signal mirror (yes, that's Errol Flynn)...
The copilot has sharp eyes; he spots the tiny flash of light.
The process begins again (real shot this time):
Next: the invasion begins!