Delegate, Virginia House of Delegates, 1968-present

Candidate, United States Congress, Virginia, 1976

Candidate, Lieutenant Governor, Virginia, 1965

Member, Northern Virginia Transportation Authority, 2002-present

Director, McLean Land Conservancy, 2000-present

Chairman, House Appropriations Committee, 1998-present

Director, Shendadoah Valley Battlefield Commission, 1998-present

Member, Interstate Commission on the Potomac River Basin, 1997-present

Co-Chairman, Jamestown-Yorktown Foundation, present

Virginia Chair, Joint VA-DC-MD Interstate Commission on Transportation

Former Chairman, Joint Legislative Audit and Review Commission, 2002-2004

Elector, Presidential Electoral College, 1972, 1988, 2000

Chair, Advisory Commission on Intergovernmental Relations, 1990-1998

Minority Floor Leader, Virginia House of Delegates, 1982-1985

Experience, Republican State Central Committee, 1966-1980

President, Virginia Electoral College, 1972

Chair, Republican State Finance, Virginia, 1966-1968

Delegate, Republican National Convention, 1964

Editor and Publisher, Callahan Publications, 1958-2000

Lieutenant, United States Coast Guard Reserves, 1959-1963

Enlisted, United States Marine Corps, 1950-1952

Vice Chair, Dulles Corridor Rail Association, 2000-present

Trustee, Jamestown-Yorktown Foundation, 1998-present

Director, Northern Virginia Community College Educational Foundation, 1985-present

Member, American Legion Post No. 270, McLean, 1960-present

Member, United States Naval Institute, 1960-present

Member, National Press Club, 1959-present

Experience, Aviation/Space Writers Association

Experience, Benevolent Protective Order of Elks

Board Member, Claude Moore Colonial Farm

Experience, Council of State Governments

Past Director, Fairfax County Chamber of Commerce

Experience, Fairfax Historical Society

Regional Council, Fairfax-Falls Church United Way

Experience, Herndon Chamber of Commerce

Experience, Izaak Walton League

Board Member, Jewish Foundation for Group Homes

Experience, Knights of Columbus

Experience, Marine Corps League

Experience, McLean Chamber of Commerce

Past Trustee, McLean Citizens Foundation

Experience, McLean Rotary

Past Director, Mental Health Association of Northern Virginia

Past Director, Metropolitan Washington Council of Governments

Experience, Navy League

Director, Scenic Virginia

Director, Tysons Transportation Association

Experience, Vienna-Tysons Regional Chamber of Commerce

Advisory Board, WNVT

Co-Chairman, Jamestown-Yorktown Foundation, 2005

Chairman, Northern Virginia Community Foundation, 1980-1998

Past President, McLean Kiwanis Club, 1970