i just rent the movie and i hadn not hear about it before . it nice to see some quite realistic yet action pack shootout . notice that you can actually see the bullet make hole in wall ( you do not even see that in most hollywood movie since they seem to think bullet will just bounce off brick wall . ) . some quite good acting and a complex yet sense making plot ( if you can not understand it and watch it again or wait until you have finish high school . ) . you see a quite capable swat team slowly get decimate all the while hunt a psychotic killer who seem to be constantly hire new thug for support too . most of the background story unfold only in the end but it make sense and the tension generate stay fresh throughout . good work .