No injuries were reported and law enforcement was contacted after the bullet struck the right side of the aircraft just under the flight deck. At the time, the crew of Flight 2494 was preparing the plane for departure from Dallas Love Field Airport, Southwest said in a statement.
The Boeing 737-800 aircraft was “struck by gunfire near the cockpit” around 8:30 p.m. while taxiing before the flight to Indianapolis International Airport. The plane returned to the gate and the passengers exited, the Federal Aviation Administration said in a statement.
It was probably a stray bullet that was oppressed at home and it just ran away on day (the same day as the landing was scheduled for)