(b) Instructed the Secretary to approach the Commandant of the Visual Inter-Services Training and Research Establishment accordingly, and to inform the Commandant of the Joint Services Staff College and the Controlling Officer. 4. PHOTOGRAPHIC SURVEY OF PORTUGAL (Previous Reference: C.O.S.(46) 132nd Meeting, Item 5, and C.O.S. (W) 365) THE SUB-COMMITTEE had before them a Minuteby the Assistant Chief of the Air staff (Intelligence) to the Secretary, covering a letter from the Ambassador in Lisbon to the Foreign Office, intimating that the Portuguese Government had invited His Majesty's Government to send an expert to Lisbon, who would be shown all available photographs and maps of Portugal.