cia historian gerald haines, in his 1997 history of the cia's involvement with ufos, also mentions truman's concern. "a massive buildup of sightings over the united states in 1952, especially in july, alarmed the truman administration. on 19 and 20 july, radar scopes at washington national airport and andrews air force base tracked mysterious blips. on 27 july, the blips reappeared."<ref name="http://www.cia.gov"></ref> the cia would react to the 1952 wave of ufo reports by "forming a special study group within the office of scientific intelligence (osi) and office of current intelligence (oci) to review the situation. edward tauss reported for the group that most ufo sightings could be easily explained. nonetheless, he recommended that the agency continue monitoring the problem." the cia's concern with the issue would lead to the creation, in january 1953, of the robertson panel.