If you've seen one you've seen them all. I've seen this movie about 8 times with different actors. Lockeddown in the police station fighting off a group of bad guys. A team of policeman fight there way out. Notable things I learned from this. I'd you someone tries to gas you to death ...pee neutralizes it so get to peeing. Also Trish stratus was a Solid minor character...give it a watch for free but don't pay for it.
Review of Gridlocked
