Vanessa Lachey, who plays Jane Tennant in NCIS: Hawai'i, is just like her on-screen character, but far more wacky. Co-star Jason Antoon revealed that Vanessa's great sense of humor often leads to her breaking first on set. The cast's close friendship has also translated to the way they improvise their scenes, with the writers developing the characters based on the relationships forming in real life. Despite being the number one on the call sheet, Vanessa doesn't act like it and remains kind to everyone. She recently shared a heartwarming tribute to her TV "family" on social media when filming wrapped up for season two of NCIS: Hawai'i. The show was renewed for a third season in February.