HK atc called in the blind to the "unidentified" a/c, whih was squawking 1400 to initially identify itself, and when that did not work, to press ident, to which she got a "reply". She was able to verify their level. This went on till we transfered to Sanya, but the ANA guys were able to see the a/c and it was clearly "shadowing" them. I know the Chinese and Americans have being shadow boxing in the region of late, but this is the first time I have heard of a civilian a/c being caught up... At the time it was unnerving. Now,.... Just saying...
Interesting that you mention this. I just watched the series "Air Crash Investigation" on the episode regarding the mid air collision between a F-4 and a DC-9 in 1971. The vertical stabiliser of the F4 sliced the DC cockpit clean off. No comms from either pilots, fell off radar contact. Only survivor was the RIO on the F4.