The 25th Amendment

Section 1.
In case of the removal of the president from office or of his death or resignation, the vice president shall become president.

Section 2.
Whenever there is a vacancy in the office of the vice president, the president shall nominate a vice president who shall take office upon confirmation by a majority vote of both houses of congress.

This amendment set up the plan of succession in case the president or vice president is killed or unable to perform his duties as president.

I thought that this video was very relevant because in this case the amendment would have came into effect

I thought that this image was funny because it represents the stress that could happen and help in this situation by taking that person out of office and putting in the vice president to take over