Of course she had the reflexes to keep up with him. River had been running with him most of her adult life not to mention the unfortunate bit with the Silence. Not that he would know about that just yet.

She smirked faintly at the sight of the large chunk of metal as it buried itself where he used to be and then turned her attention back to him. "You're very welcome."

Now for the reason for the explosion... River really wasn't surprised by his explanation and in fact was just shaking her head a bit. Typical.... and then he had to utter that one phase which always herald trouble no matter who uttered it.

"Friends of yours? They don't look happy to see you in the slightest. In fact, I think this might be the part where we start running, don't you agree?"