In this episodes final act, many of the "extras" are actual family members of the first responders who lost their lives on 9/11.
Although her death has been a driving force for Mac Taylor (Gary Sinise) for the preceding seven years, this is the first appearance, albeit in flashbacks, of his late wife Claire Taylor (Jaime Ray Newman).
Alana De La Garza appeared as Claire Taylor in a photograph in Sweet 16 (2006) (#3.10).
Alana De La Garza appeared as Claire Taylor in a photograph in Sweet 16 (2006) (#3.10).
A.J. Buckley (Adam Ross) also guest starred as Ed Zeddmore in the television show Supernatural (2005). Coincidentally, the trick he uses to track down Black Mike and Mike White, or Mike Black and White Mike--which includes calling the cell phone carriers and remotely turning on the phone's GPS--is the same way the main characters of Supernatural--Sam and Dean Winchester--find each other when one of them goes missing, or one of them sneaks off, not wanting to be found, yet gets into trouble and needs to be rescued by the other.
The closing song is "Should I Fall Behind (Will You Wait For Me)" written by Bruce Springsteen and sung by Bruce and his wife Patty.