Near the end when Rhodes is sliding down the rock face it is smooth, after he lands the rock is jagged behind him, in the next shot the face is smooth again and when he starts to climb in the next shot it is jagged again.
Near the end when Banks takes the flare gun he doesn't take any extra flares however he eventually manages to shoot the gun twice without reloading it at all and Rhodes shoots it for a third time at the end still with no extra ammo or being reloaded.
Geary: [talking to himself]
Hey Geary, if you had the chance to start your day over again, would you do anything different? Geary sat there in silence... yeah, I shoulda worn underwear.