The E-2 Hawkeye is a crucial component of all U.S. Navy carrier air wings; each carrier is equipped with four Hawkeyes (five in some situations), allowing for continuous 24-hour-a-day operation of at least one E-2 and for one or two to undergo maintenance in the aircraft carrier's hangar deck at all times. Until 2005, the US Navy Hawkeyes were organized into East and West coast wings, supporting the respective fleets. However, the East coast wing was disestablished, all aircraft were organized into a single wing based at Point Mugu, California. Six E-2C aircraft were deployed by the US Naval Reserve for drug interdiction and homeland security operations until 9 March 2013, when the sole Reserve squadron, VAW-77 'Nightwolves', was decommissioned and its six aircraft sent to other squadrons.