Cannons on the WH lawn. Cannon looks familiar.
https://twitter.com/KarluskaP/status/1267462967832072192
They aren't decorative. Circa 1860 cannons are still quite effective, useful, safe, and as they were when they were new. I'd guess the Marine Corps Barracks at 8th and I paused their silent practice to assemble this defensive position.
Different weapons for different targets