Agent Torres/Wilmer Valderamma really submerged into an ice bath to add an authentic reaction for the scene in the locker room.
This is the first episode of the series not to feature any cast members from the backdoor pilot on JAG and the first episode of NCIS, "Yankee White."
Though it is no mentioned as such McGee has a walking cast on his foot for the second 1/2 of the episode after he tells Nick and Kasie that he has a hairline fracture.