It went almost unnoticed, but Super Bowl featured a U.S. Army helicopter flyover.
NFL Super Bowl XLVIII game between Seattle Seahawks and Denver Broncos game was opened by a flyover performed by AH-64D Apache, UH-60M Black Hawk and CH-47F Chinook choppers from 101st Combat Aviation Brigade.
Unfortunately, the flyover was barely visible from the ground and not aired by FOX TV.
So, if you want to have a look at what it looked like from both MetLife Stadium and from aboard one of the Chinooks helicopters, here are a couple of videos for you.
From inside the Stadium:
Flyover from aboard the Chinook: