From the 1970 Black Belt article mentioned before:
JUDO TAKES TO THE AIR
By Mildred Carr
SEOUL, Korea - Each overseas flight of the Korean Airlines will have a judo expert on board as a precautionary step against hijackers or "other unruly passengers," an airlines spokesman announced. Thirteen highly skilled judoka have been assigned to serve as stewards on the international flights to Japan and Southeast Asia. This program was started as a result of the hijacking of a Korean turbo-prop plane by a North Korean spy. This is the first time an airline has officially initiated a martial arts program on its flights.
CHINESE MARTIAL ARTISTS CONVENE FOR CONFERENCE
By John T. McGee
NEW YORK CITY -Alan Lee and the Chinese Kung Fu-Wu Su ***'n were hosts to a group of masters in the Chinese fighting arts. The association, under Lee's direction, put on an exciting and highly informative demonstration. Afterwards, a conference was held in which the guests participated. The questions discussed included: "Should a ranking system similar to that used in karate be instituted in kung-fu?"; "Are diplomas necessary?"; and "Is the idea of a national kung-fu association tenable at the present time?"