Mother of Las Vegas shooting victim: I want everyone to know he's my hero

Joseph Wilcox was at a Las Vegas Walmart when the husband and wife shooters walked in. They had just killed a pair of police officers, they opened fire and ordered everyone to leave the store. Wilcox was carrying a legally concealed weapon and refused to run away. He chose to confront the danger and he lost his life. Anderson spoke with Joseph Wilcox's sister C.J. Foster and his mother, Debra.

Kyung Lah looks at frightening video from inside the Walmart that was just released by police.