THREAD: Tomorrow afternoon—unlike in 1953, 1957, and 1961—nuclear weapons will not be featured in the post-inaugural parade down Pennsylvania Avenue in Washington, DC. And that's as it should be. But let's go to the wayback machine for a look at those past displays of firepower.
In 1953, a demonstration model of the massive M65 280-millimeter atomic cannon rolled down Pennsylvania Avenue and in front of the White House for President Dwight D. Eisenhower's inaugural parade. It was tested four months later at the Nevada Proving Ground. 
Eisenhower's 1957 inaugural parade featured the Air Force's Matador and Snark cruise missiles as well as the Army's Corporal short-range ballistic missile.
President John F. Kennedy's 1961 inaugural parade included four nuclear missiles, all operated by the Army: the Pershing I intermediate-range ballistic missile, the Lacrosse short-range missile, the Nike Hercules air defense missile, and the Nike Zeus antiballistic missile.
Kennedy's parade also featured a float celebrating the Navy's new Polaris submarine-launched ballistic missile (whose first at-sea patrol was in November 1960) ...
as well as a float from Tennessee, home of the Oak Ridge National Laboratory, promoting Atoms for Peace. Ann Ellington, daughter of Governor Buford Ellington, waves to the crowd.
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