The Dallas-Fort Worth metropolitan area is estimated to have over 30,000 Iranian-Americans. Iran's first astronaut Anousheh Ansari for many years was a resident of Plano, Texas, a suburb of Dallas-Fort Worth. Dallas' Iranian community was large and influential enough to host US Secretary of State Mike Pompeo for a private visit in April 2019. And San Antonio and Austin each are said to have 3000-5000 Iranian American residents each, who are mostly attracted to large academic centers of excellence such as South Texas Medical Center and UT Austin or the climate of the Texas Hill Country area that is not un-similar to the southern Iran Zagros Mountains region. The largest concentration of Mandaeans from Khuzestan outside the middle east are settled in the San Antonio area. The Shah of Iran was also last hospitalized at San Antonio's Wilford Hall Ambulatory Surgical Center in Lackland Air Force Base during his last days. This is the same base that trained many pilots of Iran's Royal Air Force before the 1979 revolution.