The courage and quick thinking of Dr. David Benke, a math teacher at Deer Creek Middle School in Littleton, Colorado, may have saved dozens of lives. In a terrifying scene reminiscent of the Columbine shooting that scarred the town 11 years ago, a 32 year-old gunman showed up outside of the school just as students were leaving on Tuesday. He opened fire with a hunting rifle, wounding two students before Benke could spring into action. “I noticed that it was a bolt-action rifle and I knew that after he got a shot off, I would be able to grab him before he would be able to work the action again,” Benke said. He and another teacher subdued the man until police arrived.