SEOUL, South Korea – President Donald Trump tweeted that military solutions are "locked and loaded" as officials said Friday they plan to move ahead with large-scale U.S.-South Korea exercises later this month that North Korea, now finalizing plans to launch a salvo of missiles toward Guam, claims are a rehearsal for war. The exercises are an annual event, but come as Pyongyang says it is readying a plan to fire off four Hwasong-12 missiles toward the tiny island, which is U.S.