Shows with large ensemble casts, such as NCIS and FBI, could be particularly vulnerable. FBI: Most Wanted has already cycled through cast changes across its six seasons. However, we may now face even bigger shakeups — or sudden cancellations with no time to wrap things up.

The FCC's approval, which was necessary for the deal to move forward, caps a long-running corporate saga over the fate of Paramount, which owns Paramount+, the Paramount Pictures movie and television studios, the CBS television network and CBS News and Stations. Paramount also owns Nickelodeon, BET, MTV, Comedy Central and other media brands.