Quinn is in Gibbs' car, the sketch he drew is in his left jacket pocket. When he gets out of the car and hands the sketch to Gibbs, Quinn takes it from his right pocket.
When Kemp walks into NCIS, Gibbs says "It's December 23rd", but on the sketch that Kemp shows them, it says "12-24-08".
When McGee is shot by the security guard with the taser, the guard runs off but you still hear the sound of the taser and see McGee reacting. Once the gun was dropped, he wouldn't be getting any more voltage.