In March 2018, a White House military aide carries the “football,” a system that allows President Trump to launch a nuclear strike at any time.

WASHINGTON, DC – MARCH 19: A White House military aide carries the nuclear “football” as he leaves the White House March 19, 2018 in Washington, DC. U.S. President Donald Trump and first lady Melania Trump are traveling to New Hampshire where the president is scheduled to deliver remarks about the onging opioids crisis at Manchester Community College. (Photo by Chip Somodevilla/Getty Images)