he quickly had the teams medic , who was fortunately only slightly injured , and the two remaining uninjured members of his team load the dead and injured into two of the surviving vehicles , and topping the vehicles up with all the remaining medical supplies , and most of the water , he sent them post haste back to safety , but david remained behind with his own truck , a small amount of water , a considerable amount of weapons and ammunition , and an even larger supply of explosives of every description .