 Millions of Americans traveling ahead of the 4th of July holiday. TSA expects to screen over 30 million passengers through Monday, July 8th. AAA predicts a record 60 million will travel by car, which is nearly 3 million more than last year. More on these stories at townhall.com. A message from Little Falls Radio and local physicians of knowing the signs about heart attacks. Every 40 seconds, someone in the U.S. has a heart attack. That's nearly 800,000 Americans each year. A heart attack occurs when blood flow to the heart is blocked.