Frank Reagan is a fictional character from the popular television series Blue Bloods. He serves as the Commissioner of the New York City Police Department, showcasing a strong sense of duty and commitment to justice. As a dedicated leader, Frank often faces tough decisions that balance the law with the needs of the community. In addition to his professional life, Frank is a family man, deeply connected to his children, who also work in law enforcement. His relationships with his son Danny, daughter Erin, and grandson Jack highlight the importance of family values and support in both personal and professional challenges.