President Trump said Sunday morning his proposed "triumphal arch" in Washington will become a dual-use facility housing snipers, drones and ammunition storage. Why it matters: The president is now framing construction of the arch as a national security issue " much like he did with the East Wing ballroom/military complex at the White House. What they're saying: "At the strong request of the United States Military, and for National Security purposes, I have agreed to convert the magnificent Triumphal Arch, planned since the Civil War Era many years ago, at the Receptive Circle adjoining the Arlington Memorial Bridge, into a top grade Military Complex/Triumphal Arch, to house, store, and have the rapid ability to use large numbers of drones, plus Snipers, on both the roof and plaza areas, and additionally have and hold large quantities of sniper ammunition in storage," Trump posted on Truth Social.