On NCIS: Los Angeles Season 9 Episode 14, the NCIS team, supplemented by Hetty's wartime comrades, head to Vietnam for a dangerous, off-the-books rescue operation.
(Hetty approaches Callen as he is sleeping, he wakes up staring at Hetty) Hetty: Did you catch him this time? You were twitching like a sleeping dog. Callen: Well, you now what they say about sleeping dogs. (looks at Hetty)
