Grenadier Guards change their post at Clarence House, right, official residence of Prince Charles, in London, Monday, Nov. 22, 2010. Security is tight at the royal residencies following the ... more 
Grenadier Guards change their post at Clarence House, right, official residence of Prince Charles, in London, Monday, Nov. 22, 2010. Security is tight at the royal residencies following the announcement of the engagement of Britain's Prince William and fiancee Kate Middleton. less 
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Associated Press | Photo By Sang Tan
Thu, Nov 25, 2010 4:12 AM EST