ST. LOUIS (KSDK) - Our producer, Sheila, who was at the Boston Marathon during the explosions, was hard to get in touch with via telephone sometimes, but it was easy to talk to her on Twitter.

In fact, a lot of people near the bombing site used social media to communicate with friends and family in the moments after the bombing.

Leilani Carver is a professor of communication at Maryville University, and she joined First @ 4 to talk about social media during the bombing.

Click the video player above to hear what she had to say about the role of social media during a disaster.