In 2002, Grenada's road system of 1,040 km (646 mi) included 638 km (396 mi) of paved roads. The country's major port is St. George's. A new international airport, Point Salines, built largely with Cuban assistance, and scheduled for completion in 1984, was repeatedly cited by the US as posing a possible military threat to the Caribbean region. After the US-led invasion in 1983, the airport was completed with funding mainly from the US. Airline flights began in October 1984, and in 2001, the airport served 322,000 arriving and departing passengers. In 2001 there were three airports, all of which had paved runways. The smaller airports are at Pearls and on Carriacou.