Ryan Christopher Clark

(CBS/AP)  Ryan Clark was called "Stack" by his friends, many of whom he met as a resident assistant at Ambler Johnson Hall, where the first shootings took place.

Clark, 22, was from Martinez, Ga., just outside Augusta. He was a fifth-year student working toward a triple-degree in psychology, biology and English and carried a 4.0 grade-point average. He was also a member of the Marching Virginians band.

"He was just one of the greatest people you could possibly know," friend Gregory Walton, 25, said after learning from an ambulance driver that Clark was among the dead.

"He was always smiling, always laughing. I don't think I ever saw him mad in the five years I knew him."

Click On The Names Below To Learn More About Those Who Lost Their Lives At Virginia Tech:

• Ross Abdallah Alameddine
• James Christopher Bishop
• Brian Bluhm
• Ryan Clark
• Austin Cloyd
• Jocelyne Couture-Nowak
• Daniel Perez Cueva
• Kevin Granata
• Mathew Gregory Gwaltney
• Caitlin Hammaren
• Jeremy Herbstritt
• Rachael Elizabeth Hill
• Emily Jane Hilscher
• Jarrett Lane
• Matthew Joseph La Porte
• Henry Lee

• Liviu Librescu
• G.V. Loganathan
• Lauren McCain
• Partahi Lumbantoruan
• Daniel O'Neil
• Juan Ramon Ortiz
• Minal Panchal
• Erin Peterson
• Michael Pohle
• Julia Pryde
• Mary Karen Read
• Reema Samaha
• Waleed Mohamed Shaalan
• Leslie Sherman
• Maxine Turner
• Nicole White