Revealing mistake: When the armored truck flies through the air and smashes into a concrete pipe that is being hauled by a yellow truck, there is a shot from in front of the yellow truck. You can see there is no driver. (00:28:55)
Revealing mistake: When Yuri Komarov is on the phone with his daughter, the screen on the phone is the dial screen rather than the on-going call screen. (00:34:10)
Revealing mistake: When the armoured truck hits the first parked car you can see the smoke appear at the side of the car and a jet of smoke when it flips from the air cannon.
Revealing mistake: In the opening chase with the armoured truck it comes up behind a blue car that is already dented on the near side, which is the side it slides round to so the truck hits it. It then gets pushed onto a silver van that is completely wrecked from previous takes.
Answer: His name was Anton. He was an associate of Viktor Chagarin. Jack, although lying, said Yuri Komarov sends his regards. Chagarin and Komarov were former partners and Chagarin was the one who got Komarov put in jail. By Jack saying Komarov sent him, it made it seem like Komarov was out for revenge on Chagarin (by attacking his associates). The courts offered to reduce Jack's sentence for testifying against Komarov, which allowed Jack to get close to him and help him escape.
Bishop73