A plane has crashed on the runway at Kalispell Airport in Montana, triggering a huge fireball and sending smoke billowing into the sky, with two passengers suffering minor injuries. Shocking video shows a giant fireball exploding into a massive, pillowy cloud of black smoke into the Montana sky. The small craft was approaching the runway when it burst into flames, with the fire spreading onto the infield of the runway. Eventually, the plane crashed into a second, stationary plane that was sitting on the runway. Fortunately, all four passengers survived the collision and only two were being treated for minor...