As the world looked on in horror at the savage shootings in the hilly Newtown community of Sandy Hook on December 14, Robyn Griggs-Johnson was in the living room of her family home in Grand Rapids, Michigan.
It was late in the day, hours after Adam Lanza opened fire on defenceless children and their teachers at Sandy Hook Elementary School.
Griggs-Johnson heard a knock at the door. When she opened the window to see who it was, she was shot, says the local Michigan Live news website. The case remains unresolved.
A day later, as details emerged from Newtown, a boy, 3, in Guthrie, Oklahoma, was visiting his aunt and uncle. He found a loaded handgun in their bedroom, picked it up and accidentally shot himself in the head.
The deaths are among the hundreds of gun-related fatalities cited by President Barack Obama this week as he unveiled the most far-reaching measures to stem gun violence in decades.