Duluth’s 148th Fighter Wing conducted combat air patrols in the no-fly zone above Minneapolis during Sunday’s Super Bowl - a fact the unit couldn’t publicly disclose until after the game’s conclusion.

“Our F-16s flew over the Super Bowl for roughly eight hours. With the state of Minnesota hosting the Super Bowl, it was only fitting that Minnesota’s own fighter jets defended this historic event. It was an honor to protect our guests and residents from any potential airborne threats,” Col. Chris Blomquist, the 148th’s wing commander, said in a statement on Monday. “While we were protecting the skies over the Twin Cities, the 148th continued and will always be ready to serve our nation and community at a moment’s notice.”

The 148th Fighter Wing has been conducting security training exercises with other federal agencies during the last year in preparation for the Super Bowl at U.S. Bank Stadium. The most recent training exercise occurred on Wednesday, when the 148th practiced intercepting a rogue aircraft above Minneapolis.