With today's deadly school shooting in Nevada, look back at other major school shootings in U.S. history.
Aug. 15, 1998: Frederick Martin Davidson, 36, a graduate engineering student at San Diego State University, was defending his thesis before a faculty committee when he pulled out a handgun and killed three professors.
German Federal Archive/Wikimedia Commons
It's easy to upload your photos and/or videos on News8000.com. Once you do, we'll share your upload with the community!