For the first time late last week, Chinese troops from the People’s Liberation Army visited the continental United States to drill with their American counterparts at Joint Base Lewis-McChord, a few dozen miles from Seattle and home of the I Corps. While it was the stuff of headlines, it certainly is not the first time the U.S. and Chinese militaries have cooperated. During the Clinton administration, the Pentagon instructed U.S. aircraft carriers to welcome delegations of Chinese military officials. Technology aside, aircraft carriers operate with careful choreography that is the result of decades of experience dating back to World War II and before. They are mini-cities, home to more than 5,000 people all working in unison. The human clockwork and processes behind the technology can be difficult to ascertain from the outside, but its mastery is necessary if an aircraft carrier is going to be able to launch and recover aircraft, re-supply, and generally operate without accidents. The Chinese delegations studied the U.S. Navy’s operations and processes, many of which they proceeded to replicate in their own navy and on their own aircraft carriers which increasingly threaten U.S. interests.