John J. O'Keefe, 84, of Concord, MA, died Saturday, July 18, 2015 at Concord Health Care Center in Concord. Born in Boston on May 21, 1931, he was the son of the late Timothy and Agnes (Mahoney) O'Keefe. He grew up in Ayer and Littleton and was a resident of Concord for the past twenty- five years. He was a veteran of the United States Army. For many years, Mr. O'Keefe was employed by the International Cable Company in Hudson. Survivors include his daughters, Mary Kay Bradshaw and her husband Eric of North Port, Florida, and Kerri Sirvio, and five granddaughters, his brother, Robert O'Keefe and his wife Susan of Westborough, his sister, Mary Ellen Sayles of Lovell, Maine and sister-in-law, Lorraine O'Keefe. He was the brother of the late Timothy, Joseph and Francis O'Keefe, and Aileen Iverson and Jane Sim. He is also survived by many nieces and nephews. A funeral Mass will be held on Tuesday, August 18th at 10 am in Holy Family Parish at St. Bernard's Church, Monument Square, Concord Center. Burial will be private. Concord's town flag will fly at half-staff on Tuesday, August 18th in recognition of Mr. O'Keefe's service in the U. S. Army. Arrangements are under the care of Susan M. Dee and Charles W. Dee, Jr., Dee Funeral Home of Concord. To share a remembrance in Mr. O'Keefe's guest book visit www.deefuneralhome.com.