William (Bill) M. Koski, 85, of Greensburg died Saturday, May 27, 2023, at home with family at his side. He was born May 13, 1938, in Latrobe, a son of the late Martin and Lena Gianetti Koski. He is survived by his wife Michelle Amidon Koski, his daughters, Kimberly Galvin and Lisa Jackson, brothers Gerald Koski and Victor Koski, and grandchildren, Bryan Riano and Shanese Jackson. In addition to being a diehard Pittsburgh Panthers football fan, Bill was an avid reader of WWII and Civil War history as well as a disciplined 5-mile daily walker. Bill retired from United Airlines and enjoyed traveling during and following his 38 years of service with United Airlines. He was a Veteran of the USMC. Arrangements by the CLEMENT L. PANTALONE FUNERAL HOME INC., 409 W. Pittsburgh St., Greensburg, PA 15601, 724-837-0020 wwwpantalone.com Natale N. Pantalone, supervisor.