Not sure if its a tv show or movie but quite recent set in a modern skyscraper where one man saves the day and takes out all the bad guys he sneaks around using the air ducts and uses telecom and cctv. The hero maybe ex military or spy. Theres a big shootout scene in a big modern glass room where he takes out quite a few men.
JoeKing12001 Answered question Jul 29, 2022
Could it be “Skyscraper”. https://www.imdb.com/title/tt5758778/?ref_=fn_al_tt_1
JoeKing12001 Answered question Jul 29, 2022