Another concept piece for the cover of Force Multiplier

Scene in the book: Charlie Beckwith arrives on the Tahitian island of Moorea when she hears that he has been taken hostage.  Charlie, and her two friends, have been searching for Jake without luck. Then, suddenly, they hear gunfire on the ridge above them on the side of the mountain, and Jake is being shot at by two pursuers.  He is hit in the leg, and looks as if he'll be killed by the guy chasing him.  Charlie draws down on the bad guy with her rifle, like a sniper, and shoots him, saving Jake.

It would be in various greens (jungle, tropics) with shadows, bright sky above and behind.