Mack Morris

CNN aviation correspondent and private pilot @PeteMunteen: "I'm stumbling over my words here b/c this is just so staggering that there is a midair collision involving a commercial airliner. Commercial flights are equipped for ages with a system called TCAS -- Traffic collision Avoidance System. It tells the pilots in the cockpit how to avoid other airplanes nearby. It is a system that came about because of mid-air collisions with commercial airliners and small general aviation aircraft, commercial airliners and helicopters. It tells the pilots, there's traffic ahead of you -- climb, climb, now descend, descend now. This would be an incredible lining up of the holes in the Swiss cheese, the -- the which is the saying in aviation, the gaps in the -- in the safety chain in aviation, that this happened and now investigators have an incredible amount of work cut out for them to figure out how a commercial airliner in the United States in 2025, when the pilots are incredibly trained, the technology is is incredibly sharp, collided with what is apparently a military or government helicopter. Nobody else uses the blackhawk. Yeah, it is -- it is really something else. I -- I -- I'm just stunned."