Anthony DiNozzo Sr. is played by Robert Wagner. Michael Weatherly played Robert Wagner in The Mystery of Natalie Wood (2004), based on the true story of the life and mysterious death of actress Natalie Wood, Wagner's wife.
Gibbs' Rule no. 6: Never say you're sorry.
Rule no. 18: It's better to seek forgiveness than ask permission.
Early in the episode Gibbs orders the team to grab their gear for a trip to Naval Air Station Patuxent River. McGee responds "Pax River? Weren't we just there?" This is an inside joke referring to show's previous episode Ignition (2010), which also had scenes based at NAS Pax River.
The aircraft the Prince took his Check Flight in is a T-45A Goshawk 2 seater trainer based on the British BAE Systems Hawk. The T-45A is used by the USN as an aircraft carrier capable trainer.