The Exchange 11/4/09 IOWA (kuni) - Host Ben Kieffer talks with Lt. Dan Choi, a West Point graduate and Iraqi war veteran who faces discharge from the U.S. Army after admitting he is gay. Later in the show, Kieffer talks with University of Northern Iowa Professor Nicholas Pace about his new book "The principal's Challenge-Learning From Gay and Lesbian Students." © Copyright 2009, kuni