'NCIS: Los Angeles' regulars O'Donnell, Eric Christian Olsen (who plays 'L.A.' Detective Marty Deeks), Ruah and executive producer Shane Brennan (second from right) talk during a break in filming. The guest stars have been getting a hand from the veterans. Ruah remembers that her cast received similar treatment when they were guests on 'NCIS' four years ago; it would be "non-karmic" not to do the same. ©Robert Voets, CBS