Boeing F4B-1 (8133) thejivebombers Naval Aviation Pre-war February 19, 2018April 28, 2020 1 Minute Seen here undergoing some heavy maintenance at NAS Anacostia. Those tubes beneath the aircraft? I will take a guess that they are used for laying down a smoke screen. Share this:TwitterFacebookLike this:Like Loading... Related Published by thejivebombers View all posts by thejivebombers Published February 19, 2018April 28, 2020