NBC News correspondent Jeff Rossen weighs in on the fifth day of Oscar Pistorius' murder trial -- which included dramatic testimony from the Olympian's former girlfriend Samantha Taylor:
"When Samantha Taylor first took the stand, Oscar Pistorius was stoic. But soon, he was writing lots of notes. Passing them to his defense team. During one of the breaks, he huddled with his lawyers. First time we've seen that. Game faces on."