Craig LeMoult

Nicole Hockley says she used to be the kind of person who knew where she was going in life. Then, last Dec. 14, her 6-year-old son, Dylan, was one of the 26 victims killed by a gunman at Sandy Hook Elementary.

"Every plan I had went out the window, and I just kind of lost my way in terms of where do you go from here, how do you pick yourself up and move forward and find a new path," Hockley says.

The phone kept ringing at home, and media outlets sent flowers with cards asking for interviews.

As parents send their kids off to school this fall, many are wondering what's been done since last year to make sure they're safe.

Many schools have embraced new security measures since the Sandy Hook Elementary School shootings, from uniformed police on hallway patrol to shatterproof laminated windows.

'How Could This Have Happened?'

Bob Gay of Newtown, Conn., has a tattoo on his arm of his daughter Josephine's footprints as a baby and the number "2560," for the number of days she was alive.