There are two ways to express your love for America this weekend: fireworks and earning 8X experience in Gears of War 2. The latter you can do any time through July 6, while the former must be done at night on July 4 (or July 3 if you're a cheater). The latter is clearly the best choice.
Along with the XP multiplication will be nine waves of Tickers, and a wave of Boomer action. It's enough to make you want to go out and blow something up in reality, and for one weekend that will be totally acceptable, unless you live in one of those states where that isn't acceptable and you can't light your own fireworks. If that is the case don't break the law, get some sparklers, sucker. The rest of us will be blowing our hands off with the biggest firework we can find. That's really why we need to rack up the XP, because we won't be playing for a while after this weekend.
Oh, and according to the Gears' site this event is not just for July 4th, but is also celebrating Canada Day. Huzzah for Canada!