In early 2024, Gary Sinise lost his son, McCanna “Mac” Sinise, who died at 33 after a five-year battle with a rare spinal cancer called chordoma. Mac was a talented drummer who often played beside his father in the Lt. Dan Band, using music to lift the spirits of troops around the world. As his illness progressed, it took away his ability to play the drums, but it never took away his passion. Unable to hold drumsticks, Mac taught himself to compose music digitally, working quietly and bravely to

Gary Sinise is mourning the death of his 33-year-old son Mac after losing his battle with cancer. | Access

Detective Mac Taylor - Ground Zero • CSI:NY • Gary Sinise - New York