The pilot of a regional airliner flying over North Dakota made an unexpected sharp turn to avoid a possible midair collision with a military B-52 bomber that was in its flight path over the weekend.

The Federal Aviation Administration said on Monday it is investigating a near miss between a SkyWest Airlines jet and a U.S. Air Force jet over North Dakota last week. SkyWest Flight 3788, an Embraer ERJ-175 operating as a Delta Connection flight from Minneapolis to Minot,

Sorry about the aggressive maneuver. It caught me by surprise,” the pilot can be heard saying on the video. ”This is not normal at all. I don’t know why they didn’t give us a heads up.”