Did you watch Obama speak about the mine accident? The door opened, slammed shut-?

....while Obama was giving his condolences to the U.S about the mine accident, the door behind him (he was in the Rose Garden) opened and shut very loudly. Then someone peeked out from the curtain, and I found this distracting. He also abruptly ended his speech after this....my question is; what was this about? Was it a signal of some sort? What did you think of his speech?