City flags will fly at half-staff until American hostages held in Beirut are released. . . . The City Council will hold a study session Aug. 5 to discuss the Aviation High School site. . . . Residents 65 or older will get a 50% discount on dog license fees beginning in August. . . . The City Council will hold a public hearing Monday to consider revoking entertainment permits for two restaurants on the International Boardwalk that have been the source of noise complaints from boaters and neighboring businesses.