Mr. McKinney entered the cryptologic community in 1948 with the Army Security Agency after graduating from A"T State University in Greensboro, NC, in electrical engineering and physics. He was involved in the engineering and field deployment of special HF Signals Intelligence equipment used in the detailed analysis of characteristics of transmitters of unfriendly military forces. He was a member of the first NSA engineering group when NSA was formed in 1952. As target communications at VHF and higher frequencies were encountered, Mr. McKinney played a critical role in the development and fielding of equipments to meet this challenge. His work was not limited to the laboratory but involved extensive field work to rapidly deploy these equipments. Mr. McKinney retired from the NSA in 1973 to become a full-time staff member of the African Methodist Episcopal Church.