https://screenrant.com/ncis-season-23-episode-2-timothy-mcgee-confirms-exit-plan-explainer/

After years of a stagnated personal arc, Timothy McGee has effectively confirmed his plans to leave MCRT in NCIS season 22, episode 2.

It's The End of an Era for ‘NCIS’ as Its Best Character Is Exiting the Series (https://collider.com/ncis-timothy-mcgee-exit-explained/)

Looks like this beloved character is ready to Ctrl-Alt-Leave after 23 seasons.