Gary Sinise reveals agonizing details of son Mac's final hours before his death from rare cancer at just 33

Gary Sinise reveals what would get him to return to acting six years after leaving Hollywood to take care of sick son and wife

Gary Sinise reveals late son lost ability to move and was covered with 'rock-sized' tumors amid rare cancer battle which saw actor quit Hollywood to care for him

‘Forrest Gump’ star Gary Sinise details son Mac’s brutal cancer death — 6 years after quitting acting to care for him