He's 'deadly' [='dead'] serious about finding another job.
Officers are allowed to use 'deadly force' if necessary.
The two gang leaders are 'deadly' enemies.
(..) ...so I wanna make this clear to everybody: If there are any congratulatory cakes or any of that nonsense... ...I will be compelled to use deadly force. I hate you. I hate you all. Thank you. No incendiaries in the White House. All right, baby, I just gotta get my weapon real quick. (..)2013 White House Down