It is well-known that Gemini 8 fired their retros to get control of
the spacecraft, and then reentered. Was there only one firing that
got control of the ship, or was there a second one that actually
brought it down? If there were two, approximately how much time
elapsed in between?

http://science.ksc.nasa.gov/history/...mini-viii.html

" The crew regained control of their spacecraft by using the reentry
control system, which prompted an early landing in a secondary landing
area in the Pacific. "