Every Inauguration, NBC News sends Al Roker out into the parade crowd to see if he can attract the attention of the President and Vice President as they walk the parade route. In the video, Al successfully manages to get President Obama's attention, wherein Obama points at the sky to thank Al for the nice weather in DC. A few moments later, when Vice President Biden appears, Al begs Biden to come to him and give a quick interview. Biden says "they won't let me," referring to the secret service, but then quickly changes he mind, does a quick jog over to Al and shakes his hand. Clearly overjoyed, Al screams and cheers "I'm done," drops his mike and walks out of view.
This is why Al Roker has a tag and Matt Laur doesn't.