I got into NCIS around season three and I'm just now going back and watching the episodes in order. THIS is the episode that makes it the POWERHOUSE prime time show it is now. Suspense, intrigue, infilteration, a battle with a smart, a very smart baddie on their own turf. It's what the best stories are made of and with everyone involved the personal investment of each character in the situation and the desired revenge after is realistic and a strong storyline that will no doubt be loads of fun to follow. I know this to be true because even coming into the story part way through, I was hooked. Anyone who sees it from the beginning is already at an advantage.
A great ep on a GREAT show.