Mark Harmon, Brian Dietzen Photo

From: Photo Flash: First Look - NCIS' 'Squall,' Airing 3/26

On NCIS' upcoming episode, titled 'Squall,' a massive storm brings the NCIS team aboard the USS Borealis, where everyone becomes a suspect once the crime scene proves that Mother Nature wasn't the only culprit. Tension builds when McGee discovers that his estranged father, Navy Admiral John McGee, was on board during the incident, on Tuesday, March 26 (8:00-9:00 PM, ET/PT) on CBS. Jamey Sheridan ('Homeland') guest stars as McGee's father, Navy Admiral John McGee.