It is obvious that the same 5-6 photos are being "searched" through in the computer database when the NCIS team is trying to ID the terrorist.
When Ari's picture comes up on McGee's computer, McGee points to the monitor with his right hand, but in the closeup of the screen, he's pointing to it with his left hand.
When McGee is trying to figure out the age of the terrorist, it's a different picture than the original one. The picture on Gibbs computer shows him smiling, while the picture that McGee had just had him smirking.
Ari tells Kate that he is going to kill 'your president, and mine', but Sharon was Prime Minister of Israel and would not have been referred to as president.
Ari's motorcycle's engine noise changes between V-2 and inline-4 engine type a number of times.
Gibbs is told medical school in the UK last four years which is true though it can last up to five years. They team should have searched at least one more year.