San Francisco Chronicle: Ask Adm. Samuel Locklear III, commander of the U.S. military's sprawling Pacific Command, what his most serious threat is, and you might be surprised. There's a long list of possibilities, after all: North Korean nukes, rising Chinese military power and aggressive cyberespionage, multiple territorial disputes between major powers and persistent insurgencies from the Philippines to Thailand, not to mention protecting some of the world's most vulnerable shipping choke points. Add all of that up, though,...