A rare photo, released by the White House, shows Barack Obama fielding calls from a tent in Brazil, to keep up with events in Libya. The tent is a mobile secure area known as a Sensitive Compartmented Information Facility, designed to allow officials to have top secret discussions on the move.

They are one of the safest places in the world to have a conversation.

Designed to withstand eavesdropping, phone tapping and computer hacking, Sensitive Compartmented Information Facilities - also known as SCIFs - are protected areas where classified conversations can be held.

RT @macon44: We've posted the graphics from the enhanced #SOTU to @slideshare

I know it's just a museum cafe but government/spy culture makes me feel skittish. #paranoid