If you're lucky enough to find yourself on a travel assignment in the Nation's Capital on Independence Day, you'll discover there's no shortage of things to do in DC. If you can brave the heat, head out to the 4th of July Fireworks on the National Mall. (As an allied professional, you know how to cope: stay hydrated!) Fireworks, music, friendly folks sharing picnics on their 'viewing' blankets -- plus, the show is free! (But no matter where you are this holiday weekend, you can still catch the concert and fireworks on PBS.)