(a) For purposes of this section:
(1) “Airport” means an airport, with a secured area, that regularly serves an air carrier holding a certificate issued by the United States Secretary of Transportation.
(2) “Passenger vessel terminal” means only that portion of a harbor or port facility, as described in Section 105.105(a)(2) of Title 33 of the Code of Federal Regulations, with a secured area that regularly serves scheduled commuter or passenger operations.
(3) “Sterile area” means a portion of an airport defined in the airport security program to which access generally is controlled through the screening of persons and property, as specified in Section 1540.5 of Title 49 of the Code of Federal Regulations, or a portion of any passenger vessel terminal to which, pursuant to the requirements set forth in Sections 105.255 and 105.260(a) of Title 33 of the Code of Federal Regulations, access is generally controlled in a manner consistent with the passenger vessel terminal’s security plan and the maritime security level in effect at the time.
(b) It is unlawful for any person to knowingly possess any firearm in any building, real property, or parking area under the control of an airport, except as provided for in subdivision (b), (c), or (e) of Section 26230.
(c) It is unlawful for any person to knowingly possess, within any sterile area of an airport or a passenger vessel terminal, any of the following items:[…]
(11) Any ammunition as defined in Section 16150