If you were asked to rate the readiness levels of the U.S. military, what would you say? For this exercise, assume you have a scale with five choices: very weak, weak, marginal, strong and very strong. Think about each branch of the military. Where would it fall? Perhaps you're thinking, "I'm not an expert, so I can't say for sure." So let me refer you to the latest report from The Heritage Foundation's Center for National Defense. The authors are, in fact, experts -- and their conclusions are sobering. I'm referring to the 2018 Index of U.S. Military Strength. The...