The father of Brian Callahan , Bill Callahan is widely regarded as one of the greatest in NFL history.
Brian Callahan is a professional football coach currently serving as the for the New York Giants . Callahan
: He served as the head coach of the Tennessee Titans from 2024 to 2025. His tenure included efforts to develop young quarterbacks like Will Levis and 2025 draft pick Cameron Ward. The father of Brian Callahan , Bill Callahan