 Projects nearly 71 million of us will head 50 miles or more from our homes over the nine-day Independence Day travel period. And the Transportation Security Administration expects to screen over 32 million flyers in airports from tomorrow through July 8th. That's up about 5.5% from last year's numbers. If you're traveling by car for the 4th of July, it's best to hit the road in the morning. The transportation data company, INRIX,