I remember working for the Near-Earth-Object (NEO) assessment group back in 2001 when I was a delegate fro UN Space Generation Forum (SGF) in Vienna, our group was working on a proposal to detect and catalog all the NEOs that were coming to Earth including a Space Defense Initiative program, back then I was jokingly said that we need a Grand Cannon to stop all those asteroid , too bad the rest of the member never watch Macross or Robotech so their reaction was "What canyon?".
Nevertheless, our work was accepted by the committe and included in the 2001 Vienna Charter.