There’s a good read on The (Colorado Springs) Gazette website about Air Force linebacker Patrick Hennessey, who’s back playing for the Falcons this year after being granted a ninth semester at the academy. The story sheds light on a unique factor that differentiates service academies and regular colleges: Nobody wants to stay in school any longer than possible, and a special pride is taken in being part of a specific year’s graduating class. Because Hennessey underwent multiple shoulder surgeries and missed academic time, he’s still at the academy under the “Cadet Turnback Program.” He’s allowed to play football this season,…