The car passes the same part of the road (with a bent tree) approaching and leaving the gas station, even though it left in the opposite direction.
When leaving the blast control site, Matthews tells the pilot to go to route 104 in a normal voice. He would not have been able to be heard over the engine and rotor noise. This error was repeated during flight when Matthews told the pilot the shack door was open as well as when he uses the radio in the helicopter.
In several of the helicopter flight scenes, the engine sound is looped and keeps repeating.