In the preview of Navy, Pitt's opponent in the Military Bowl, I wrote that the Midshipmen will give the Panthers a difficult test. The betting line reflects that as Pitt enters the game as an underdog.
As of Sunday, lines had Navy as a three-point favorite in the contest. It is worth noting, though, that that's actually smaller than the five it opened at. Still, unless there's a very late shift, the Panthers will almost certainly enter the game as the underdog.
Home field advantage is generally worth around three points in a spread, so on a truly neutral field, we might have seen a pick 'em for this one.