Crown Prince Sultan Bin Abdul Aziz, Minister of Defense and Aviation and Inspector General, arrived here Thursday evening from Morocco for follow-up medical tests and treatment. Prince Naif Bin Abdul Aziz, Minister of Interior, and Prince Khalid Bin Sultan, Assistant Minister of Defense and Aviation, were among Saudi princes and high ranking officials who welcomed Prince Sultan at John F. Kennedy Airport. Prince Salman Bin Abdul Aziz, Emir of Riyadh, was among several senior princes and officials who traveled with Prince Sultan from Agadir Airport in Morocco, where they were seen off by Moroccan Prince Rashid Bin Al-Hassan II, other members of the royal family and senior government officials.