Worldwide Holiday Travel Alert in Affect

The US State Department has issued a worldwide travel alert as millions of Americans are flying this holiday weekend.
1:04 | 11/25/15

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Transcript for Worldwide Holiday Travel Alert in Affect
Complicating air travel, as well. Millions flying home this Thanksgiving weekend after the state department issued that worldwide travel alert warning Americans to be vigilant in public places and when using transportation, the tsa says it's ready for the influx and they screen 40% more people over Thanksgiving and ABC's David Kerley is at Reagan national airport with more on this heightened state of security. Good morning, David. Reporter: Good morning, George. We have seen that security, the additional t-shirt officers and police officers as well who guard airports and a lot of canine units moving through the lines and sniffing the passengers as they are checked here. You mentioned 40% more passengers coming through between today and Sunday, the airlines say that 10 million Americans will fly. And, George, the good news so far there have been no major delays in the airline system. But you still got to get there early. Reporter: Yeah, actually the airlines and tsa are saying because so many more people are coming through and this heightened awareness about terror that you should arrive two hours before your flight and make sure you get on and get to where you want to go. David Kerley, thanks very much. As I always say, pack a lot of patience. That's what you should pack.

This transcript has been automatically generated and may not be 100% accurate.

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