When we hold our breath, the brain is momentarily oxygen deprived and hits the flight or fight response, fueling a more emotional reaction to the words shooting out of our fingers.

CNN: Do you get e-mail rage?

And then something that they would call the boost-phase missile defense, which would be ways of shooting down missiles when they're at their sort of most vulnerable phase of flight.

NPR: Missile Defense, the U.S. and Europe

After a short break, Det Botha was brought in and was questioned about telephone records from the night of the shooting, evidence of violence in Mr Pistorius's past and the extent of the flight risk.

BBC: Oscar Pistorius detective on attempted murder charges