 In June 1968, Evans was assigned as assistant deputy director for concepts and operational readiness, Defense Communications Planning Group, Washington, D.C., and in June 1969 he assumed duties as the deputy director.In February 1970, General Evans was assigned to Headquarters United States Air Force, Washington D.C., as special assistant for sensor exploitation, a newly created office.He was transferred in April 1971 to the Office of the Deputy Chief of Staff, Research and Development, as director of operational requirements and development plans, and in September 1971 he became director of development and acquisitions.