In times of emergency, the last thing you should think about is updating your social media status. The first thing you've got to do: get to safety. When you're out of the woods, tweet away.

Vivian Schiller, the former NPR chief and top digital officer for NBC News, announced in October that she'd be joining Twitter as its "head of news."

On her first day of work at the office, she was pleased to note that her co-workers appear to have their priorities in order. She tweeted: