There are different marketing strategies when it comes to movie trailers. One is the *Project Hail Mary* approach, in which the final trailer pretty much gives away the entire movie, trusting that the audience will still come along for the ride because it's a sci-fi adventure, not a whodunnit. The other extreme is Universal Pictures' deliberately vague trailers for *Disclosure Day*, director Steven Spielberg's return to his "aliens are among us" roots, which give tantalizing hints about the basic premise and little more. Per the official logline: “If you found out we weren’t alone, if someone showed you, proved it to you, would that frighten you? This summer, the truth belongs to 7 billion people. We are coming close to… Disclosure Day.” As previously reported, David Koepp, who has worked with Spielberg on numerous projects (including *Jurassic Park* and *War of the Worlds*), wrote the screenplay, while John Williams composed the score. Emily Blunt stars as a TV meteorologist in Kansas City.…