A former U.S. Air Force sergeant, who was kicked out of the military in 2002 and eventually went to work for the repeal of “Don’t Ask, Don’t Tell,” will be one of eight featured “citizen co-chairs” of President Barack Obama’s inauguration on Monday. The “citizen co-chairs” role was created to highlight Obama’s first-term accomplishments with examples of lives that have either been improved by his actions or inspired his presidency. Among those participating in the inauguration will be former SSgt. David Hall, who joined the Air Force in 1996. Hall was a self-described “military brat” whose father and step-father both retired from the Air Force after serving 20 years. Following in their footsteps, Hall was training to be a pilot when, in 2002, he was discharged after a female cadet went to his commander with the revelation that he was gay.