Several of the characters in the episode are named after The X-Files (1993) crew. P.O. Wong after James Wong, producer on The X-Files. P.O. James Morgan after writer and producer Glen Morgan. P.O. Howard Carter after creator and producer of The X-Files Chris Carter and producer Howard Gordon. P.O. David Bowman named after producer Rob Bowman. Master Chief P.O. Vince Nutter (played by Brian Thompson, the Alien Bounty Hunter from the X-Files) after director and producer David Nutter and producer Vince Gilligan. Darin Spotnitz after producer and writer Frank Spotnitz and writer Darin Morgan.
At one point, Special Agent Todd says that she always loses when she bets. She then says she had bet on the Red Sox. In October of 2004, 7 months after the episode aired, the Red Sox won the World Series for the first time in 86 years.
When Ducky shows Gibbs the x-rays on the light panel, the skull with multiple fractures is the same exact film as the one from episode "Left For Dead," except it's is horizontally reversed.