Six days a week, the president receives a daily briefing about international security issues including covert operations underway around the world.

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Before a new president takes office, he receives briefings on secret intelligence vital to national security.

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The top secret "nuclear football" accompanies the president at all times.

On August 4, 1964, as events in the Tonkin Gulf unfold, Secretary of Defense Robert McNamara apprised President Lyndon B. Johnson of the situation in a series of phone calls. In the third secretly recorded phone call of the day, McNamara reports that two U.S. destroyers deployed in the Gulf east of Vietnam are under attack. While McNamara did not know it at the time, the information he relayed was later determined to be false.

You might be surprised by the quirky foods presidents ate when they got the munchies or grabbed a bite on the go.

Follow these presidential lessons in love to win a second term with your Valentine.