KEILAR: Live pictures from the Pentagon. That's what you're looking at there. This is where Defense Secretary Ash Carter is about to come out and make a big announcement. We will bring you that to you live. Well, the Istanbul attack has raised concerns about the safety of airports, especially as Americans embark on a long holiday weekend. Appearing at an oversight committee hearing, the head of Homeland Security, Jeh Johnson, tried to reassure travelers. He talked about what you can expect this weekend at airports across the nation.</s>JEH JOHNSON, HOMELAND SECURITY SECRETARY: Since Brussels, we have enhanced security at airports around the nation. Since the Brussels attack in March, our TSA Viper Teams have been more visible at airports and at transit centers generally.
Ash Carter Expected To Make Announcement