"Yankee White"
On MOnday May 27, 2024 I saw "A Thousand Yards", the 1,000th episode of the NCIS francise as a whole and the 464th NCIS episode, which was first broadcast on April 15, 2024. That episode had a flashback to scenes from a case 20 years earlier, and thus about 2004.
And I recognized the scenes, having seen them comparatively recently.
And the previous case seen in flashbacks was the the first episode "Yankee White" first broadcast on September 23, 2003.
I know an episode from 2003 wouldn't seem that recent to me, so I should have seen "Yankee White" as a rerun much more recently, possibly in 2023 or 2022.