[1] Blair served in the United States Army from 1953 to 1956, achieving the rank of captain.

Blair ran an unsuccessful campaign for Governor of the State of Maryland in 1970.

[1][2] On July 14, 1971, Blair was nominated by President Richard Nixon to a new seat on the United States District Court for the District of Maryland created by 84 Stat.

He was confirmed by the United States Senate on July 29, 1971, and received his commission the same day.

Blair served in that capacity until his death of an apparent heart attack on April 20, 1980, in Fallston, Maryland.