2014 Sydney hostage crisis
After the siege began, a staged exclusion zone was established with thousands of people evacuated from nearby buildings, including from the floors above the café. The Sydney Opera House was evacuated after a suspicious package was found; however, reports were unconfirmed by police. The US Consulate General in Sydney, located in Martin Place, was also evacuated. Some Sydney schools were put in "white level lockout" due to the hostage situation, which meant that no school group was permitted to leave the school grounds.
Battle for Australia
The Battle for Australia is a contested historiographical term used to claim a coordinated link between a series of battles near Australia during the Pacific War of the Second World War alleged to be in preparation for a Japanese invasion of the continent. Since 2008 these battles have been commemorated by Battle for Australia Day, which falls on the first Wednesday in September.