A Republic of Singapore Air Force F-16 Fighting Falcon attached to the USAF's 425th Fighter Squadron at Luke Air Force Base, Arizona. Partnered with the USAF since the 1992, the RSAF maintains a handful of jets within the United States due to Singapore's limited space to house more aircraft. In 2012, the two countries celebrated the 20 years of this partnership. During the Great Panic, these RSAF F-16s assisted in destroying the mountain passes within the Rocky Mountains to secure the West Coast safe-zone. They were unable to return to Singapore so they contributed to defense of the West Coast. Eventually, their planes would be grounded in an effort to save fuel. It took until 2023 for the pilots and their technicians to return to Singapore once the city-state was cleared of zombies.