A stunning U.S. raid to capture Venezuela’s president came after a group of amateur intelligence analysts argued that satellite images reveal a Venezuelan launch site that could send ballistic missiles as far north as Washington, D.C. There was no indication that the American attack had anything to do with the subject of the group’s claims, which the U.S. military dismissed earlier as “speculative” and one top expert rated as plausible but unproven by the evidence. Days before the American strike on Venezuela, the private sleuths suggested military developments in Venezuela, with...