Baten, Saudi Arabia, April 17, SPA-- Assistant Minister of Defense and Aviation and Inspector General for Military Affairs Prince Khalid bin Sultan bin Abdulaziz arrived here today to patronize the Air Defense forces' exercise of patriot launching in the Northern Region. He was received at King Khalid Military airport by Commander of Air Defense Forces Lieutenant General Attiyah bin Abdulhameed Al-Touri and a number of Military officials.