They'd seen objects. Radar blips moving at extraordinary speed. What they didn't see, in almost every case, were any actual aliens. Only one witness, Clifford Stone, a retired Army sergeant, told of having directly seen aliens. He'd seen them both dead and alive at the scenes of crashed saucers.
Many aliens are humanoid, and, indeed, are indistinguishable from members of our own species.
Some can touch an object in a dark room and tell its color. There were a few other unverified bombshells. One speaker claimed that George Bush the elder, when director of the Central Intelligence Agency, refused to give newly inaugurated President Carter the top-secret files on UFOs. Greer, meanwhile, assured the audience that the military has already developed spacecraft that can travel faster than the speed of light. Many, he claimed, are afraid to come forward without congressional immunity.