Sedwick was born in 1946 in
Kittanning, Pennsylvania. He attended
Dartmouth College in
Hanover, New Hampshire where he received a
Bachelor of Arts degree in 1968. He then served in the
United States Air Force as a
sergeant from 1969 to 1971. He graduated with a
Juris Doctor degree from
Harvard Law School in
Cambridge, Massachusetts in 1972. He went into private practice in
Anchorage, Alaska from 1972 to 1981. He served as the director of the Division of Land and Water Management of the Department of Natural Resources for the state from 1981 to 1982. He returned to private practice from 1982 to 1992. ==Federal judicial service==