Lots of running here between these two rare option-attack, ground-oriented teams. That's great for the Under. Air Force is averaging fewer than nine passes per game this season. Navy has thrown just 20 passes in its past two games. 
Another big key to a low-scoring game is each team plays stout run defense. Air Force has the 18th-best rush defense, while Navy ranks 14th in stopping the run.
The Under has cashed in six of Air Force's last seven nonconference games. This is a huge rivalry matchup so intensity should be way up. The Under has cashed six of the past seven times the schools have met, including last season.