May 25th 2009 is Memorial Day in the United States.
Memorial Day commemorates U.S. service men and women who died while in the military service throughout history.
If you witness a Flag Ceremony during Memorial Day (or at any time, such as daily Walt Disney World Flag Retreat Ceremony in Main Street USA, Magic Kingdom). You should stop, bring yourself to attention, gentleman remove hats and all place your hands by your side. Observe the ceremony in silence and appreciate the sacrifice that is and was given for our freedom.