If you were on the east side of the Salt Lake Valley on Tuesday evening, you almost certainly heard them.

Air Force fighter jets, F-35s, circled the area multiple times around 6:30 p.m.

But why?

On Wednesday, Hill Air Force Base’s public affairs officer, 1st Lt. Rachel Shaffer, provided an answer.

“Those jets were down in the Salt Lake area yesterday evening because they were performing a flyover at the Utah Talons softball [team’s] opening day,” she said.

The Utah Talons are the newest team in the Athletes Unlimited Softball League, one of the two major professional softball leagues in the United States. They play their games at the Dumke Family Softball Stadium at the University of Utah.

The Utah Talons beat the Chicago Bandits 5-2.

Shaffer said the four F-35s were from the 388th Fighter Wing.

“The four-ship formation of F-35’s flew over the stadium at approximately 6:45 p.m. local time. They performed the flyover on their way back from a routine training mission that involved other aircraft transiting back to Hill AFB,” she said in a statement. “Prior to the flyover, the four-ship formation maintained a pattern above Salt Lake City and the surrounding area that allowed them to set up for the flyover.”

A Salt Lake City airport spokesperson said that, despite rumors to the contrary, there were no impact to airport commercial operations as a result of the jets.