794A.00/8–550: Telegram

The Joint Chiefs of Staff to the Commander in Chief, Far East (MacArthur)

top secret
priority

JCS 88051. From JCS. In order to establish the fact of support to the North Koreans by the USSR or the Chinese Communists, you are authorized to conduct aerial reconnaissance over all Korean territory, including Korean coastal waters, up to the Yalu River on the West Coast and up to but short of the Korean-Soviet International boundary on the East coast. Such aerial reconnaissance operations will be conducted from as far South of the frontiers of Manchuria or the Soviet Union as practicable and in no case will these frontiers be Overflown.