National

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

The head of the Transportation Security Administration is promising the agency will do a better job of staffing enough officers at airport security checkpoints to reduce long lines. But he says those long lines are likely to continue through the peak summer travel season.

Travelers at some airports have been waiting two to three hours or more to get through screening. As a result, thousands have missed their flights in recent weeks.

The problem has been particularly bad at Chicago's airports.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

The National Rifle Association endorsed Donald Trump on Friday, just before the apparent Republican nominee addressed its annual conference in Louisville, Ky.

"To get the endorsement, believe me, is a fantastic honor," Trump said, adding that he and his sons are members of the NRA. "They're much better shooters than I am," he said.

"They have so many rifles and so many guns, I tell you, sometimes even I get a little concerned," Trump said.

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