Riyadh, Sha'ban 25, 1437, June 01, 2016, SPA -- Deputy Crown Prince Mohammed bin Salman bin Abdulaziz, the Second Deputy Prime Minister and Minister of Defense, was briefed on the project of designing and production of unmanned aircraft. The project is being carried out by Prince Sultan Research Institute of Advanced Technologies. He was briefed on the project at King Salman Air Base in Riyadh today. --SPA 23:18 LOCAL TIME 20:18 GMT www.spa.gov.sa/w