Gary Sinise had earlier asked that "Fleet Week" be depicted sometime in the series, due to Mac Taylor's military background. The annual event is held in NYC the week of Memorial Day.
The Navy ship in this episode is the USS Intrepid, which is now used as a museum and memorial.
Trivia Tropes:
Actor Leaves, Character Dies: Delayed. Vanessa Ferlito had left the show after this season's second episode to return to the theater, but her character remained alive until this one.
