DC-tomb of the unknown soldiers. The site is guarded 24-7-365. The guard paces back and forth about every 30 seconds. Turning and clicking his heels in exact precision. Wow-it's 89 degrees and humid today. We were going to stay and watch the changing of the guard, but it's too hot. The 3 graves, picked at random by the Defense Dept represents one soldier each from WW1,WW2 & the Korean war. "Known only to God" posted by Di