Where was I? Oh right, a sequence of shots showing the police searching the swamp (alliteration is my form of 'Fuck you, movie!') is followed by John Cena immediately finding dead white guy's knife in the ground and his blood stain against a tree. Well that didn't take long, did it?
More shots of the cops follow, with none of them being able to find a damn thing while Cena continues tracking where they went on the ground. I know he's a marine, but that doesn't make him the goddamn Mantracker.
Oh hey, I was right!