Federal investigators were working Tuesday to find out what led a pair of private jets to collide on a runway at a small airport in Scottsdale, Arizona, killing one person and injuring several others.

collided with a military helicopter on a training flight while on approach to an airport runway. It occurred in some of the most tightly controlled and monitored airspace in the world, just over ...

collided with a military Blackhawk helicopter while on approach to an airport runway. It occurred in some of the most tightly controlled and monitored airspace in the world, just over three miles ...

collided with a military helicopter on a training flight while on approach to an airport runway. It occurred in some of the most tightly controlled and monitored airspace in the world, just over ...

collided with a military Blackhawk helicopter while on approach to an airport runway. It occurred in some of the most tightly controlled and monitored airspace in the world, just over three miles ...