of supervisors approved the purchase of two Hughes MD 500E aircraft nicknamed "Duke I" and "Duke II". In 1998, the OCSD traded their MD 500E helicopters for newer McDonnell Douglas MD 600N helicopters, becoming the first law enforcement agency to operate the MD 600N. These helicopters were faster, quieter, and safer than the MD 500E. The Air Support Unit currently operates of fleet of Eurocopter AS350 AStar helicopters, with a Bell UH-1 Iroquois used for search and rescue purposes. Costa Mesa Police Department The Costa Mesa Police Department operated an aviation unit out of John Wayne Airport for 41 years. The division was called "ABLE" for Airborne Law Enforcement. ABLE disbanded in 2012; the unit's helicopters at the time of the disbandment were three Eurocopter EC120 Colibris. Statistics Top destinations Airline market share Annual traffic Ground transportation Roads and highways John Wayne Airport is located next to the interchange between I-405 (San Diego Freeway) and MacArthur Boulevard. The airport is also near I-405's interchange with SR 55 (Costa Mesa Freeway). Heading south on MacArthur Boulevard from the airport provides access to SR 73 (Corona del Mar Freeway), which becomes the San Joaquin Hills Transportation Corridor (toll road) southeast of MacArthur Boulevard. Bus The airport is served by Orange County Transportation Authority ("OCTA") route 76, which runs only on weekdays from 6 am to 6 pm. Car rental On-site car rentals are available in the basement level of the Parking A2/B2 garages. Off-site car rental shuttles are available at the Ground Transportation Center. Parking The airport has four parking garages open in the main terminal area: A1, A2, B2 and C. Valet parking is available between at a drop off/pick up area Terminals A and B, and between Terminals B and C. An off-airport parking lot (Main Street Parking) is also available at 1512 Main Street in Irvine, with free shuttle service to the terminals. Irvine iShuttle The City of Irvine's iShuttle route A serves the airport and Tustin station. The iShuttle service runs only during weekday rush hours. Taxis and private shuttles Taxis and private shuttles are available from the Ground Transportation Center located outside the lower level between Terminal A and B. Transportation network companies Transportation network companies, Lyft, Uber and Wingz, are available. Drop-offs can be made at the departure level outside each terminal; pickups are allowed only in designated parking structure areas assigned for pickups for transportation