A blast — well, more of a bolt — from Air Force’s football past will be eligible for the College Football Hall of Fame this year, but he’s got a crowded field to deal with. Ernie Jennings, a first-team All-American wide receiver in 1970 who led the Falcons to the 1971 Sugar Bowl, was among the 77 players and coaches to make the Hall’s first cut, the Air Force Academy announced Tuesday. His 74 catches for 1,289 yards and 17 touchdowns remain single-season Air Force records; he also holds all the school’s career marks (148 catches, 2,392 yards, 28 TDs).…