That is an old video taken from a SUV driven by Blackwater Security Personnel. Notice how the vehicle moves up partially to protect the Principle's Vehicle from fire on the right side. If you listen you can also here the adrenalin effects form the operators in the vehicle. Luckily, it w as a small IED that went off. Some of the larger IEDs, will take out 2 or more vehicles, even if not directely underneath when goes off.