Mark Richards had always dreamed of being in the military, but because he was already in a career, he figured he was too old to start.
Then Sept. 11 happened.
"That really just changed everything. All the excuses melted away, and I knew I had to serve my country," said the now-sergeant in the Arizona Army National Guard and research engineer at the Biodesign Institute's Center for Biosignatures Discovery Automation.
Watch his story here, part of ASU's Salute to Service.
See videos of the ASU community serving in other branches of the armed forces here.
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