Samuel Cullen is a true family man at heart, and he'll do anything to protect his family and make sure they're healthy and safe; even going as far as to let Dr. Brennan work her magic with his daughter's x-rays and finding out she has a bad bone marrow. Sam is a husband to his wife, Ellie, and father to his daughter, Amy, first and foremost, and a deputy director of the FBI second. Sam doesn't agree with Dr. Brennan's tactics and he threatens Booth quite regularly when it comes to the Forensic Anthropologist -and especially when it comes to her having a fire weapon.