Sturrock was curious what the general attitudes of the members of the AIAA might be and in 1973 surveyed the San Francisco branch of the AIAA, with 423 out of 1175 members responding. Opinions were widespread as to whether UFOs were a scientifically significant problem. Most seemed unsure or neutral on the question. Sturrock was also curious as to whether fellow scientists like the AIAA members ever reported seeing UFOs, i.e., anomalous aerial phenomena that they couldn’t identify. The survey indicated that about 5% had, which is typical for what is usually reported for the general population as a whole.