Roc Canals/Getty, Shaunl/Getty, Tyler Le/BIAmerican warships and bases in the Pacific are within reach of an increasingly worrying threat, a missile force unlike anything the US has faced in combat.China's ever-expanding Rocket Force is armed with thousands of missiles with ominous nicknames such as "carrier killers" and the "Guam Express."US military leaders and officials say these weapons could make a war in the Indo-Pacific devastating for American forces.