(2nd LD) S. Korea, U.S. pick southern county of Seongju for deploying THAAD

(ATTN: UPDATES with more info in para 5-6, 9, 13-20)

SEOUL, July 13 (Yonhap) -- South Korea and the United States picked the mountainous southern town of Seongju as the location for deploying a Terminal High Altitude Area Defense (THAAD) system on Wed