As journalists, we often takefor granted that the way we do our job, how we get our information or get on air is obvious. Butevery now and then, when I tell friends what my week has been like, I realise there is real interest not just in the story but also curiosity about the tricks of the trade. So many thingsabout reporting on the news cannot be seen on air, or divined by reading a newspaper article.So here's a little tour behind the scenes.

On Wednesday, around 11 am, President Obama announ...