active shooter

Active shooter incident reported at Villanova University was a ‘cruel hoax,’ officials say The fake report created a multi-county response on campus

5 soldiers shot at Army's Fort Stewart in Georgia, base reports

'Armed and dangerous person’ on the UNC-Chapel Hill campus

'Extremely active' shooter situation in Pittsburgh's Garfield neighborhood

Shooter opens fire at Atlanta hospital, killing one and injuring three

4 killed, 9 injured in Louisville shooting; suspect identified as bank employee

Highland Park massacre survivor speaks at Nashville news conference: 'How is this still happening?'

Travel disrupted at Las Vegas airport after false reports of an active shooter

Police report shots fired at the Mall of America

WATCH: Panic erupts in Vegas after shattering door glass mistaken for gunfire