In a flashback of Gibbs looking at the graves of his wife and daughter, the Date of Internment is "February 29th, 1991", but 1991 wasn't a leap year so there wasn't a February 29th that year.
When Ziva David talks to the Turkish captain on 3.23 the language she uses isn't Turkish but captain's is.
At 18:10- Ducky and Palmer are discussing how they might identify the second bombing victim and they rule out using DNA. But they have, previously, had Abby extract DNA from the nerves inside teeth.
Ducky mentioned that "Pinpin" is Tagalog for "rice paddy dike". The actual word for that was "pilapil" - a muddy structure used to hold the water in and as a demarcation between paddies. Pinpin could just be a nickname. On the other hand, "Pula" means red.
Gibbs is in a coma for at least a couple days, but when the breathing tube and mask are removed, his face is clean-shaven.
At the start of the episode, Tony's watching a smoking man on a ship. The smoke is moving into the man's face because the footage is running in reverse.