It's not possible to put into words the sense of loss and grief that comes to a family that loses one of their children.

What we do have to do, is listen to what Donald Trump's been saying about our military. He's called it a disaster. He says our military can't win anymore. That's a direct insult to every single man and woman who's wearing the uniform today.

We need to have a commander-in-chief who knows what she is doing.

What we need to do is ensure that we don't create an environment that puts us on a track conceivably where the United States military finds itself in a civil military crisis with a commander in chief who would have us do illegal things.

Donald Trump has no credibility to criticize me or my record or anything that I have done. If he had spent a minute in the deserts of Afghanistan or in the deserts of Iraq, I might listen to what he has to say.

And across Afghanistan, every single day, Afghan soldiers, Afghan police and ISAF troops are serving shoulder-to-shoulder in some very difficult situations. And our engagement with them, our shoulder-to-shoulder relationship with them, our conduct of operations with them every single day defines the real relationship.

It's not possible to put into words the sense of loss and grief that comes to a family that loses one of their children.