BLACKSBURG (WSLS 10) - Excitement filled the air during commencement ceremonies at Virginia Tech. An estimated 25,000 people attended Friday's ceremony.
Crowds cheered as commencement speakers, Dr. Mona Hanna-Attisha and Marc Edwards entered Lane Stadium to "Enter Sandman".
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The two played a key role in exposing lead problems in Flint, Michigan's water. As nearly 5,000 graduates prepared for the new chapter of their life, the duo encouraged them to use their knowledge to help others
"Hokies, today I am asking you to prepare yourself for the day to make a commitment to take a stand and serve others" Edwards said. "When it is you or no one. When you will go all in for a cause greater than yourself".