This is an excellent detailed analysis for this episode. 

This special episode (A Thousand Yards) is the 1,000th original episode of the NCIS franchise, which includes NCIS, NCIS: Los Angeles, NCIS: New Orleans, NCIS: Hawai'i, and NCIS: Sydney combined. It is also the 464th episode of the flagship series, NCIS. 

A CBS press release (https://www.paramountpressexpress.com/cbs-news-and-stations/shows/60-minutes/releases/?view=109588-cbs-announces-season-finale-airdates-for-2023-2024) announces May 19, 2024 as the 56th Season Finale. I did not add the other episodes in between since a week could be skipped. "Episode 31" is if all weeks air an episode.

"Blagojevich" is correctly spelled by the former Governor of Illinois, USA with "h" as the last letter of his last name. 

Search online with "Rod Blagojevic" and the results give "Rod Blagojevich." 

--His biography at Wikipedia: https://en.wikipedia.org/wiki/Rod_Blagojevich

--His biography at the National Governors Association of the United States: https://www.nga.org/governor/rod-r-blagojevich/