Students and faculty members at Great Falls Central Catholic High School and around the community are mourning the death of Father McInnis also known as Father Mac. Father Mac died Thursday at the age of 83. He died of natural causes at Benefis. Students say Father Mac will be greatly missed and was like a father to many of the students. A vigil and rosary will be held on Thursday , Aug. 1 at 7 p.m. at Great Falls Central Catholic High School.