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  A shooting of an unarmed college student by the Ohio National Guard
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  Firing White House Counsel John Dean who went to testify before the Senate Watergate Committee, he thought the conversation was being taped in the oval office
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  A series of agreements signed by Egyptian President Anwar Sadat and Israeli Prime Minister
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  a most serious accident in the U.S commercial nuclear power plant operating history
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  Iranian students seized the embassy and detained more than 50 Americans, held hostage for 444 days
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  A secret operation in which the US government secretly sent weapons to an enemy and sent financial aid to a rebel force