Altar Rock

James Remar's character is obsessed with the memory of September 11, 2001. In reality, Remar was in New York City in early September, riding the Ladder Company 3 truck with friend Patrick Brown. He left the company to film scenes for Dæmonicus (2001). As Ladder Company 3 suffered some of 9/11's heaviest casualties, including Brown, Remar says The X-Files saved his life.

When another cyclist runs Tillie off the road, Niko asks if her leg is OK. He doesn't ask about the front left side of her head which was bleeding after she fell but now is no longer bleeding.