On May 24, 2007: Changi Airports International (CAI) today announced that it has signed a Memorandum of Understanding (MOU) with the People's Committee of Thua Thien Hue Province for the development of Phu Bai–Hue International Airport. This MOU was signed as part of the Vietnamese government's launch of a tourism master plan to develop Thua Thien Hue Province as the next international tourism destination of Vietnam.