Biden places flowers outside bar where a gunman opened fire in Maine as he mourns with community
Source: Gilroy Garlic Festival shooter's rifle was legal in Nevada, banned in California
Deadliest U.S. mass shootings, 1984-2017 - Timelines - Los Angeles Times
At least 9 dead after gunman opens fire in Omaha mall
1 year ago, Omaha mall shooting took a Moline daughter
Omaha police fatally shoot armed man in Target store
9 dead in Omaha mall shooting – The Denver Post
Nine killed in Omaha, Nebraska mall shooting - Wikinews, the free news source
U.S. Mass Shooting Data: Two Dead at California High School - Bloomberg
Omaha mall shooting suspect charged with first-degree murder