Timeline of Homeland Security Events and Milestones


Austin Serial Bombings

March 2-21, 2018: A string of bombings rocks Austin, Texas as a man delivers packaged bombs around the area. For nearly a month, eight package bombs were discovered, six of them detonating, until the suspect committed suicide before police could arrest him.

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Oso Landslide

Oso Mudslide

(Credit: Jonathan Godt, USGS)

March 22, 2014: Four miles east of Oso, Washington, a massive landslide claimed 43 lives, and destroyed 49 homes and other structures.

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2012 U.S. Drought/Heatwave

January-December 2012: The 2012 drought is the most extensive drought to affect the U.S. since the 1930s. Moderate to extreme drought conditions affected more than half the country for a majority of 2012.

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Exxon Valdez Oil Spill

(Credit: NARA)

March 24, 1989: Oil tanker Exxon Valdez struck Bligh Reef in Prince William Sound, Alaska, spilling more than 11 million gallons of crude oil. The spill was the largest in U.S. history and caused marine life, communities, and industries to suffer.

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Three-Mile Island Accident

(Credit: John G. Kemeny et al/TMI President’s Commission)

March 28, 1979: The Three Mile Island Unit 2 (TMI-2) reactor, near Middletown, Pa., partially melted down and was the most serious accident in U.S. commercial nuclear power plant operating history.

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Great Alaska Earthquake

(Credit: U.S. Army)

March 27, 1964: A magnitude 9.2 earthquake struck in the Prince William Sound region of Alaska. It lasted for approximately 4.5 minutes, and is the most powerful earthquake recorded in U.S. history.

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Influenza Epidemic of 1918

(Credit: U.S. Army)

1918-1919: Known as the “Spanish Flu” or “La Grippe”, the Influenza Epidemic of 1918-1919 struck hard and fast, and in just one year dropped the American life expectancy by 12 years.

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