NCIS: Los Angeles Charles Floyd Johnson on JAG's "Harm" and "Mac" appearing on NCIS: Los Angeles 00:34 Tabs Who talked about this show (active tab) Who talked about this show Charles Floyd JohnsonView Interview Charles Floyd Johnson on JAG's "Harm" and "Mac" appearing on NCIS: Los Angeles 00:34 Charles Floyd Johnson on his involvement with spin-offs of NCIS -- NCIS: Los Angeles and NCIS: New Orleans 02:20