The short version of this week’s service-academy football slate: Two schools square off to begin the quest for the Commander in Chief’s Trophy, and the other could play in front of more than 100,000 people. That get your attention? Here’s six quick hits before Saturday’s action kicks off: 1. Muddy track in Annapolis. Navy’s a six-point favorite hosting Air Force on what could be a soggy Saturday afternoon — nearby Maryland has already moved its Saturday game against Big Ten rival Michigan from 8 p.m. to noon to escape the damage that could be wrought by Hurricane Joaquin. No change yet to…