Ducky informs the team that the murder victim, Marine Cpl. Zack Armstrong, was killed by being stretched to death. The method of the victim's demise and his last name may be a dark-humored reference to once-popular toy called Stretch Armstrong, an action figure with stretchable arms and legs.
Michael Weatherly, who plays DiNozzo pokes fun at McGee's "Geek Speak" and hacking skills. Weatherly actually played a computer hacker named "Eyes Only" on the show Dark Angel (2000).
While the 4 amendment prohibits unreasonable search and seizures, if the police officer saw the thief stealing the purse he could have arrested him for theft.
Gibbs fires 15 shots into the computer set up. This is the exact number of rounds held by his service weapon.