Robert Kelchen writes: Summer is usually a period of relative calm for most of American higher education, but this one is different. Faculty members are increasingly indignant about the prospect of being forced back on campus in the fall; administrators are quietly scrambling behind the scenes to do contingency planning. These disruptions are just the beginning. Whether colleges are willing to admit it or not, chaos will be greeting many of them in the coming weeks, and wishful thinking will not be enough to avoid it.