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Washington Navy Yard shooting

The Washington Navy Yard shooting occurred when a lone gunman, 34-year-old Aaron Alexis, fatally shot 12 people and injured three others in a mass shooting at the headquarters of the Naval Sea Systems Command inside the Washington Navy Yard in Southeast Washington, D.C. It was the second-deadliest mass murder on a U.S. military base.

A bomb explodes on Wall Street

The Wall Street bombing occurred in the Financial District of Manhattan, New York City. The blast killed 30 people immediately, and another eight died later of wounds sustained in the blast. There were 143 seriously injured, and the total number of injured was in the hundreds.