Mark graduated in 1967 from Huntington High School and retired after many years of service as a police officer with the Nassau County Police Department, Long Island.

Mark is survived by his loving and devoted wife of 17 years, Christine (Bayley) Keener, two brothers; Charles "Skip" Keener of Beverly Hills, FL and Frank E. Keener of Newville and eight nieces and nephews.

A viewing will be held on Saturday, March 16, 2013, from 10:00 a.m. to 11:30 a.m. in the Ewing Brothers Funeral Home, 630 S. Hanover St., Carlisle. A prayer service will be held at 11:30 a.m. with Rev. William C. Forrey officiating. Burial will be private.