In 1927, Andrew Philip Kehoe, treasurer of the school board in Bath Township, Michigan, detonated bombs at the Bath Consolidated School, killing thirty-eight children and six adults and injuring fifty-eight.

Also, in 2018 a seventeen-year-old student opened fire in Santa Fe High School in Santa Fe, Texas, killing eight students and two teachers; thirteen others were injured.

Also, in 1980: Mt. St. Helens erupted