District of Columbia National Guard soldiers create a security barrier using light medium tactical vehicles prior to the state funeral for 41st U.S. President George H.W. Bush, Dec. 5, 2018. (U.S. Air National Guard photo by Staff Sgt. Anthony Small)

District of Columbia National Guard soldiers create a security barrier using light medium tactical vehicles prior to the state funeral for 41st U.S. President George H.W. Bush, Dec. 5, 2018. (U.S. Air National Guard photo by Staff Sgt. Anthony Small)