Soldiers continued to stand guard at the Tomb of the Unknown Soldier at Arlington Cemetary, dedicated to the common memories of all soldiers killed in any war, as the first major rain bands from Hurricane Sandy began to lash Washington, D.C. on Monday. Via First Army Division East's Facebook page:
Soldiers of the 3rd Inf Reg continue to stand guard at the Tomb of the Unknown Soldier, despite the worsening weather conditions surrounding Hurricane Sandy. The tomb has been guarded continuously since 1948.
CORRECTION: The photo above appears to have been taken in September, according to Poynter.
Here's another photo from the 3d U.S. Infantry Regiment Facebook page dated today, October 29, 2012.