How do a historian, an economist, and a geostrategist make the best use of their summers? In an abbreviated GoodFellows, Hoover senior fellows Niall Ferguson, John Cochrane, and H.R. McMaster reveal a few of their summertime preferences: favorite leisurely pursuits (land, air, and sea), their go-to foods and drinks, family gatherings (all three are grandparents), recommended books and movies, plus what research and writing lies ahead (plenty of writing and travel). Among the revelations: summer aficionados they are, streaming “vidiots” they’re not; plus, on a conflicting Fourth of July, a dual citizen’s “special relationship” with his native UK and adopted America.