When Magnum, Higgins and Connie flee the camp, there is a shot from the rear where one of the goons fires three times from close range at their stolen pick-up truck while they charge him. In the shots of the drive afterward, the windscreen is intact.
Snakes are not native to Hawaii and even Magnum says there is no snakes on the island yet they find themselves in the cave full of snakes. The question is left wide open in a plot hole as to how all the snakes got there and survived there.
In the aerial shot of the truck you see what is presumably the shadow of T.C.'s helicopter but the silhouette is clearly of a different model of helicopter, namely the helicopter used for the aerial shot.