During the final chase scene, we repeatedly hear the tires screeching on pavement at times when the dune buggies are driving over sand.
Early in the film Jack is told to assume Archie's identity because the Mexicans know of Archie but have never seen him. When Jack and Archie first meet the Mexican cartel is coming for Archie, but Jack says he can protect him, because his cover was not blown. But we saw a shot outside where the gunmen had Archie's picture on a cell phone so they could target him.
In the early scene, we are shown a picture of Jack Carter and Archie on the cover of a national magazine. Except later we are told that Carter works undercover, something made far more difficult by revealing him nationally.