"I think anybody could've did what I did," said James Shaw Jr., who disarmed a gunman at a Nashville-area Waffle House, where four people were killed. He spoke at a news conference with law enforcement officials on Sunday. Jason Davis/Getty Images Updated at 2:39 p.m. ET "I'm not a hero. I'm just a regular person," said James Shaw Jr., who police say saved lives by disarming a man who opened fire