A documentary about the first African-American football players in the Southeastern Conference will air this evening. “Black in Blue” tells the story of Nate Northington, Greg Page, Wilbur Hackett and Houston Hogg, the first four African American football players in the SEC. Northington broke the league’s color barrier when he played in a game for Kentucky in 1967, a day after Page died from complications resulting from an injury in practice. The program airs at 8 Central time on KET and on April 27th at 7 pm Central on KET 2.