He goes into attack 'mode' [=he becomes very hostile and aggressive] whenever his decisions are questioned.
We're changing the factory's 'mode' [='method'] 'of' operation in order to save money.
When I'm in my creative 'mode' [=when I'm feeling creative], I can write for hours.
(..) Go! Go! You got to take it, Alfred. Ah. Right. Commencing drone mode. Thermal imaging is showing me two dozen hostile's on the third floor. Why don't I drop you off on the second? Drop it. (..)2016 Batman v Superman: Dawn of Justice