Other mistake: It would appear that (as late as early-Season 5), almost all screen shots of computer forensics include the same hard drive properties screen - it seems to be the same hard drive each time - 111GB, with 93GB used and a 129kb private container on it. I have not noticed whether they are all named drive G:, but several have been. The only thing that changes is the 'header' section, which is manipulated each episode to show something specific (but not real) for the TV audience to read.
Factual error: Air Force One landed in Wichita, Kansas. The local coroner claimed jurisdiction for Wichita County. The city of Wichita, Kansas is in Sedgwick County, in southern Kansas. Wichita County, Kansas is in western Kansas, about 250 miles from the city of Wichita.
Continuity mistake: When Caitlin leaves the Cafe, Tim holds the car door open for her and she gets in. He then closes the door and leans on it. Camera cuts to a different angle and now he is stood up straight and slightly back from the car, with no time to do so.
Continuity mistake: Agent Todd is standing there coat open, hands in her pockets on Air Force One watching Gibbs walk away when the bad guy who is a reporter (Leonard) comes up to her and comments "Loosening your dress code Kate". Seconds later when she turns to indicate that he should return to the press section her coat is now buttoned up.
Continuity mistake: At the end the little boy tells Gibbs the password he has chosen for his tree house. As he does, Gibbs is working on the railing at the opposite end to the ladder. Gibbs says it's a good password and to come up. However he is now at the end of the railing by the ladder.