An estimated 1,000 volunteers formed a human Valentine heart at Invesco Field at Mile High on Wednesday as part of a local radio station's plan to show support for American troops serving overseas. An estimated 1,000 volunteers formed a human Valentine heart at Invesco Field at Mile High on Feb. 14 as part of a local radio station's plan to show support for American troops serving overseas. Gov. Bill Ritter and Denver Mayor John Hickenlooper were on hand for the event just after noon. The volunteers formed a large heart on the field in the stadium that then took on...