It’s a water buffalo, China’s beast of burden, which Ol Melvin Sisk, prominent former Gresham, Tex., Chamber of Commerce manager, is handling with expert care somewhere in China. It’s far from being a Texas longhorn, says Cpl Sisk, who should know, being a former fair and rodeo manager. Cpl. Sisk, son of Mr. & Mrs. J. W. Sisk, 707 College Ave., Lubock, Tex., has been assigned to the public relations section, headquarters of Maj. Gen. C. L. Chennault’s famed Fourteenth Air Force "Flying Tigers".