The port warden and special officers of the Harbor Department of the City of Los Angeles are hereby duly appointed and designated as peace officers for the purpose of carrying concealed upon their person or concealed within any vehicle which is under their control or direction any pistol, revolver or other firearm capable of being concealed upon the person while such port warden or special officers are in the City of Los Angeles and while they are engaged in the performance of the duties of their respective employments. (Added by Ord. No. 140,142, Eff. 5/15/70.)