I would be willing to bet that every one of these CEOs has armed security for themselves.
Chevron Doctrine Law and Legal Definition
The term Chevron doctrine comes from the case Chevron U.S.A. Inc. v. Natural Resources Defense Council, Inc., 467 U.S. 837 (1984). It refers to a defense invoked by a government agency allowing the court to show deference to the agency's interpretation of a law the it administers. It basically says that if Congress hasn't addressed the matter, the agency's interpretation of a regulation or statute it administers is permissible it should be deferred to.
https://definitions.uslegal.com/c/chevron-doctrine/