Reporting live in an outdoor environment is always a risk. Someone could run into your shot and yell something into the microphone, the weather could factor into your ability to properly report the news, maybe you swallow a fly in front of millions.
It's that fly-swallowing that Adam Boulton of Sky News endured while reporting on a shakeup in the British government. If a fly went down our throat we'd probably freak the hell out and run like the wind, but he staunchly shook it off with a gasp of air and a few flailing hand gestures before continuing his sentence.
Don't believe it was a fly? Let Boulton explain.