Revealing mistake: Throughout the entire film, whenever a character performs a high flying martial arts move, you can see that they are holding on to their wires.
Revealing mistake: Near the end of the movie Mac is chasing Roth upstairs to get the deeds back. He shoots at Roth's bodyguard, who returns fire with a machine gun. But after the guard stops shooting, sparks still fly off of the door Mac is hiding behind.
Answer: "Go get it." He was just pumping himself up.
Bishop73