Subscribe to The Weekend Scene newsletter to get our picks delivered straight to your inbox — every WednesdayHappy August! 👀This week, we’ve got outdoor movies across the DMV, a Mardi Gras-style parade, competitions putting cardboard boats and athletic dogs on the water, plus much more. Fri., gates open at 5:30 p.m., Nats Park, $25+Free outdoor movies: Catch Apollo 13” at the Library of Congress (Thurs. Sat., 5-10 p.m., freeFree outdoor movies: Watch “Captain America: The First Avenger” at Mosaic in Fairfax (Thurs. Sign up for The Weekend Scene, our newsletter about events, experiences and adventures for you and for your family around the DMV.