text:  From ABC News, I'm Dave Packer. Millions of Americans already in the air as the Fourth of July holiday weekend nears. While Friday was the fourth busiest day ever for the TSA, they say just over 2.9 million people were screened at airports. That's a bit lower than the 3 million that were expected. Brian Rollins from Knoxville, Tennessee, waking up early today in New York City, getting to Newark International, saying the travel hasn't been too bad.