This series of articles from the Drive has been very interesting. So far my personal conclusion is that we are better of searching for the explanation by inter

This series of articles from the Drive has been very interesting. So far my personal conclusion is that we are better of searching for the explanation by interviewing a board of world leading magicians and radar specialists and asking them how they would pull off such a stunt, given a couple of billions to develop it. Here are some ideas that cross my mind: - towed active anti radar / electronic warfare transponders as known from recent planes, but adapted to balloons. - simpler devices consisting of ballons with a variable radar cross section (might be as simple as a radar reflector that can be folded/unfolded remotely inside a balloon). - careful timed releases - careful timed activation/deactivation og reflectors and disposing of (i.e. rapid deflating of the ballons that will then "disappear" as everybody is moving their attention.) Edit: Also the quote from some magician (Penn or Teller?) that people vastly underestimate the effort a skilled magician will put into perfectly misleading their audiences. Finally: doing some good old fashioned magic - only this time mid air and with modern props - might make perfect sense to distract from something you really want to hide.