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164 But how do you communicate with those about whom you know so little? How do you send someone an invitation to a scientific symposium or even a ballgame when you don't know their address? How do you ask them even the most basic of questions when you don't know their language, or even if they use language? How do you exchange ideas if you haven't a clue about how their minds work? Or even, by our standards, if they communicate at all? Those who had gotten closest to living aliens in the early part of the 1947 wave of flying saucer sightings were pilots whose airplanes had been buzzed or paced in flight. For a pilot, the simplest form of communication—and the most fa- miliar—is rocking his wings. It says "Hello, do you see me?" The nighttime counterpart of this is flashing one's landing lights and looking for a similar signal in return. Neither of these techniques involves the transfer of much information but is merely a friendly acknowledgement. There have been many reports of pilots, motorists, and even campers with flashlights who have gotten a response from UFOs, but never of an organized scientific effort to say "Hi, there! We know you're there and want to get to know you!" Still, the need to communicate must have been so great that the silliest of schemes would be preferable to none at all. Probably the first attempts at communication were spon- taneous, by pilots rocking their wings, flashing their lights, and even trying to call the UFO crew by radio. While radio cer- tainly offers the opportunity to say much more than simply "Howdy!," it involves transmission and reception frequencies and, more important, language. But the technique was so sim- ple and so obvious that its naivete must be excused. Of course, if radio contact was established with the UFOs on the first attempts, then all bets are off. We have no clue about what was communicated, and thus what the impact was, if any. But on the assumption that more sophisticated techniques were required, we can make an educated guess as to what might then have been tried. Since most of the better-publicized sightings early in the CRASH AT CORONA