Spring football practice is the time to install new wrinkles and experiment, so there's little use in reading too much into what a team shows on the field.
Still, it's hard not to notice that Air Force's defense is lining up in a good deal of 5-2 - putting five defenders on the line of scrimmage with two linebackers - as opposed to the 3-4 look it has used in recent years as it used just three defensive linemen.
"Yeah, a little bit. There's a little bit of variation to what we're doing," coach Troy Calhoun said. "Yes sir. Not a lot, but a little bit, you're right.
"There's a couple wrinkles where we'll get those guys a little closer to the line of scrimmage, especially in certain situations or down and distances or based on the personnel group the offense has out there."
So far, in live situations, the defense has appeared to dominate the Falcons' offense in this new look.
"I like it," linebacker Spencer Proctor said. "It's working. We're a much more aggressive defense. The offense can't do anything with us. We're riled up."