On the DVD's, this is episode 719 and is shown in the order it was produced instead of the order originally shown on NBC.
The episode was originally planned for airing on April 30, 1999, but NBC moved it back one week to put more distance between the show's gunman/hostage story and the Columbine massacre.
Regular characters Al Giardello, John Munch, Paul Falsone, Rene Sheppard, Terri Stivers and Laura Ballard do not appear in this episode