How Thumbprint Helped 2 FBI Brothers Nab Only Sniper Duo in US History

The attacks were random and unrelenting. Neither the bullets, nor the fingers that squeezed the trigger, discriminated. Anyone and anywhere was game. That is the legacy left behind by the D.C. Snipers John Allen Muhammad, 41, and Lee Boyd Malvo, 17, the only sniper team in U.S. history. As they carried out their spree, special agents raced against the clock to end the rampage and bring peace back to the people they tormented. This is their story.