A Portsmouth man has accused a security company of firing him because he is HIV-positive…The man, Carlos Weatherspoon, worked as a security guard for DECO Security Services Inc. at Norfolk Naval Shipyard in Portsmouth from January 2006 to October 2007. He was fired "fairly suddenly after his ultimate supervisor learned of his HIV status," said Norfolk attorney Lisa Bertini, who is representing Weatherspoon…"We believe the essential functions of the job were able to be performed by him regardless of his HIV-positive status"...