To avoid the SWRB agents, Eberts says he was crawling through the air ducts, plus he is covered in dirt and down to only his undershirt and pants, a clear reference to John McClane in Die Hard (1988).
The man Fawkes accidentally releases from the holding cell is played by Adam Storke, former castmate of Vincent Ventresca (Fawkes) on the series Prey (1998). Fawkes even punctuates the moment with the line, "I know that dude."