With 14 reported killed so far, and about 17 more wounded, Wednesday's gun attack at Inland Regional Center in San Bernardino, California, goes down as one of the deadliest mass shootings in modern American history, NBC News reported.
It's the worst shooting since 27 were killed in Newtown, Connecticut, in 2012, and, so far, only four other attacks in the U.S. have ended with larger body counts. The worst took place on the campus of Virginia Tech on April 16, 2007, when student Seung-Hui Cho shot 32 people to death and wounded 17 more.
The Inland Regional Center shooting may be unique, though, because of the number of shooters. The vast majority of mass shootings have been carried out by lone gunmen; up to three people are suspected in San Bernardino.