Daybreak's Lucy Watson speaks to Debra Accomondo - who knew one of the victims of the US shooting.
She told Daybreak: "It's one of those defining moments where you know your world is going to change."
More top news
More than a thousand people have protested against fracking in Lancashire after minor earthquakes happened at the Preston New Road site.
Hundreds of people have gathered in central Belfast to show their opposition to Brexit.
Emergency services were called to reports of a collision on the northern end of White Horse Vale at 2.20pm on Saturday.