On 21 August 1962, President John F. Kennedy signed an Executive Order which rescinded the navy’s wartime authority to refuse entry to civilian visitors for security reasons. This unleashed the island’s tourism potential and ushered in an era of unprecedented economic and social advancement. Governor Manuel F. L. Guerrero, the second CHamoru appointed governor of Guåhan, established the Guam Tourism Commission and worked to increase plane routes to bring tourists to Guåhan. He also worked to modernize Guåhan’s economy. He changed the face of the island through urban renewal programs that addressed housing shortages, building modern residential subdivisions in Sinajana, Tamuning, Piti, Dededo, Yona and other areas.