Students Train For Active Shooter Scenarios

CENTENNIAL, Colo. (CBS4)– People can learn how to protect themselves against a gunman at the new Active Shooter Response Training Center in Centennial.
The third of its kind in the country and the first in Colorado, the center is implementing the Close Quarters Defense, or CQD system, often used by the U.S. Navy.
From terrorist threats overseas to active shooter situations closer to home, certified sniper and veteran U.S. Navy Seal Jimmy Graham is using more than 15 years of military train