 Stacey Lynn, CBS News. 333 celebrations going strong here in D.C. on this 4th of July. WTOP's Grace Newton checked in with people on the increasingly toasty National Mall this afternoon. We get to be here before the heat really sets in and we get to see the parade stuff. Cassidy Charles took her opportunity to beat the heat and get an early morning 4th of July walk-in around the mall. Jason Miller is visiting from Northwest Florida.