[4] On Nebraska's varsity team, McGuire played under coach Bob Devaney in 1972 and under Tom Osborne in 1973 and 1974.
[4] After graduating from Nebraska–Lincoln, McGuire returned to Omaha in 1975 to become a math teacher and head football coach at Archbishop Ryan High School.
[4] McGuire returned to Indiana State in 1993 to join the staff of Dennis Raetz as defensive coordinator and served in that position for five seasons.
Following the 2010 season in which Southeast Missouri State finished 9–3 and made the playoffs, McGuire was promoted to assistant head coach and offensive coordinator.
[11] In 2014, McGuire joined David Hutchison's staff at the Division II Glenville State as defensive backs coach.