After the war, Keenan resumed his career briefly with the Hawaiian Warriors of the Pacific Coast Professional Football League.

After his release from the Dons, Keenan signed on with the Hawaiian Warriors of the Pacific Coast Professional Football League (PCPFL), for whom he played in 1946 and 1947.

[3] During summers ahead of the season, Keenan stayed in shape by working as a life guard at Myrtle Beach, South Carolina.

[4] After his playing career ended he returned home to North Carolina where he was a football coach and assistant to the athletic director at Alexander Graham Junior High School in Charlotte.

[1] Keenan was pronounced dead on arrival after transport to General Hospital at Rocky Mount, North Carolina, on February 8, 1977.