0 secret military activities, especially illegal ones, that are ordered by a government or organization but that they will not admit to having ordered: --
The two teams specialize in black ops and oppose each other in a bureaucratic system of checks and balances.
He also taught her some investigative techniques and black ops stuff, such as using a credit card to break open a locked door.
This unit specializes in black ops, carrying out top-secret operations within unauthorized combat zones which are too politically sensitive to intervene in through conventional means.
As one of the commandos breaks in, they subdue him and slip outside; reversing the situation, and holding the black ops team hostage inside.