Aeronautical Radio, Incorporated (ARINC), established in 1929, is a major provider of transport communications and systems engineering solutions for eight industries: aviation, airports, defense, government, healthcare, networks, security, and transportation. ARINC has installed computer data networks in police cars and railroad cars and also maintains the standards for line-replaceable units.[citation needed] ARINC was formerly headquartered in Annapolis, Maryland, and has two regional headquarters in London, established in 1999 to serve the Europe, Middle East, and Africa region, and Singapore, established in 2003 for the Asia Pacific region. ARINC has more than 3,200 employees at over 120 locations worldwide.