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YouTube headquarters shooting

A shooting occurred at the headquarters of the video-sharing website YouTube in San Bruno, California. The suspect was later identified as 38-year-old Nasim Najafi Aghdam, who opened fire with a Smith & Wesson 9 mm caliber semi-automatic pistol. Aghdam wounded three people, one of them critically, before killing herself.

Saint Petersburg metro bombing

A terrorist attack using an explosive device occurred on the Saint Petersburg Metro between Sennaya Ploshchad and Tekhnologichesky Institut stations, killing 15 people and injuring at least 45. The suspected perpetrator behind the attacks was identified as Akbarzhon Jalilov.

Binghamton shootings

The Binghamton shootings took place at the American Civic Association immigration center in Binghamton, New York. Jiverly Antares Wong, a 41-year-old naturalized American citizen from Vietnam, entered the facility and shot numerous people inside. He killed 13 people and wounded four others before committing suicide.

The Super Outbreak

The 1974 Super Outbreak was the second-largest tornado outbreak on record for a single 24-hour period, just behind the 2011 Super Outbreak. It was also the most violent tornado outbreak ever recorded, with 30 F4/F5 tornadoes confirmed. From April 3 to 4, 1974, there were 148 tornadoes confirmed in 13 U.S. states and the Canadian province of Ontario. In the United States, tornadoes struck Illinois, Indiana, Michigan, Ohio, Kentucky, Tennessee, Alabama, Mississippi, Georgia, North Carolina, Virginia, West Virginia, and New York. The entire outbreak caused more than $600 million in damage in the United States with alone, and extensively damaged approximately 900 sq mi (2,331 km2) along with a total combined path length of 2,600 mi (4,184 km). At one point, as many as 15 separate tornadoes were ongoing at the same time.

Hudsonville-Standale tornado

A large, deadly tornado outbreak produced 47 tornadoes, including an F5 tornado that devastated the Hudsonville and Standale, in Michigan. The Hudsonville-Standale tornado killed 18 persons and injured 340. It also destroyed multiple homes and the historic lighthouse.