Guns and Damage

Ok, as I said yesterday, everyone in the party got a gun to use in the campaign and with that, they're now forced to be concerned with bullets flying at them. With that, guns do a lot of damage and they are definitely something to be afraid of. So far, they flipped a table to get 3/4 cover (kept them from getting hurt badly) and avoided getting shot.

Next session, they're likely to get damaged however, as they'll be running into a jungle not sure where shots are potentially coming from. I understand how concealment works and imagine i'll be using that as underbrush does not provide much protection but still, I remain concerned about them actually getting hit. I only hope nothing too serious happens and that they all live to get away. I figure this might be an opportunity to teach them a few things about retreating tactically and surprising their enemies. Last time I was particularly impressed as they made Molotov Cocktails to throw at their enemies. I figure, that they might not be a great idea in a Jungle in the Andes, but we'll see what happens. Any one have any ideas to mitigate damage from guns? I look forward to any ideas!