Section 194

Any person who-

(1) shoots at a vessel of any kind which is in use by a customs officer while engaged in the execution of his duty as such officer; or

(2) shoots at, wounds, or causes any grievous harm to a customs officer while engaged in the execution of his duty in the prevention of smuggling, or any person acting in aid of a customs officer while so engaged;

is guilty of a felony, and is liable to imprisonment for life.