On this day in 2008 more than sixty tornadoes were confirmed in a two-day outbreak over the Central United States.
On April 26, 1986 an explosion at the Chernobyl Nuclear Power Station resulted in a large release of radioactive material. Six days later on May 2 the city of Chernobyl was evacuated.
On this day in 2011 — local time — Osama bin-Laden was killed during a US military operation targeting his safehouse in Abbottabad, Pakistan.
What’s on your mind related to homeland security?