The Naval Academy on Sunday posted photos of midshipmen getting tossed into the Severn River. It’s part of a Final Fall Parade  tradition, in which plebes chase their company commanders to the river. Once at the dock, the commanders are hoisted up and tossed in. The temperature topped out in the high-50s over the weekend in Annapolis, Md., so you know that water was cold. The academy posted an album from the day’s festivities on Facebook, with the accompanying description: Midshipmen marched in the final fall parade of the 2013 season on Friday, October 25. However – this parade did not end…