I’m no where near an aviation expert, but I’ve read/heard this shadowing theory several times. I don’t think they have to be that close to masquerade as another airliner.
65 posted on 03/18/2014 6:14:54 AM PDT by jellybean
(Bookmark http://altfreerepublic.freeforums.org/index.php a place to meet when FR is down)