DS wants USNA over other SAs. MOC and Senators ask him to list SAs in order of preference. What to do? Suppose he lists USNA on MOC app, USMA on senator 1 app, USAFA on senator 2 app. Suppose he doesn't get nomination from MOC, but gets one from either senator. Could he change the SA selection after the nomination is received? Or should he simply list USNA on all 3? What if USMA or USAFA sends him LOA but USNA doesn't, either before or after receiving nomination? Lots of different scenarios.