Dramatic Plane Collision At Texas Air Show

Two vintage World War Two-era planes have collided and crashed at an air show in the US state of Texas, killing at least two.Footage shows the aircraft striking each other at a low altitude, breaking one of the aircraft in half. A fireball can be seen as it hits the ground. The planes - one of them a Boeing B-17 Flying Fortress - were taking part in a commemorative air show near Dallas.