Gibbs finds that a murder victim has been using an old alias from a 20-year-old undercover operation on NCIS. "Blast from the Past" is the 16th episode of the show's 12th season.
The team investigates the murder of an openly gay Navy Lieutenant who was set to be awarded the medal of honor on NCIS. "We Buid, We Fight" is the 13th episode of the show's 12th season.