US Vice President Mike Pence has visited American troops at Yokota Air Base in Japan before departing for Seoul. Pence spoke to US service members after touring joint US and Japanese operations centers that monitor and react to crises on the peninsula and the region at large. He is leading a US delegation to the games in Pyeongchang, as he seeks to put pressure on the DPRK. Pence will meet South Korean President Moon Jae-in before the Winter Olympics Games commence in Seoul.