Melvin Robert Laird Jr. was an American politician, writer and statesman. He was a U.S. congressman from Wisconsin from 1953 to 1969 before serving as Secretary of Defense from 1969 to 1973 under President Richard Nixon. Laird was instrumental in forming the administration's policy of withdrawing U.S. soldiers from the Vietnam War; he coined the expression "Vietnamization," referring to the process of transferring more responsibility for combat to the South Vietnamese forces. First elected in 1952, Laird was the last living Representative elected to the 83rd Congress at the time of his death.

The United States secretary of defense (SecDef) is the head of the United States Department of Defense, the executive department of the U.S. Armed Forces, and is a high-ranking member of the federal cabinet. The secretary of defense's position of command and authority over the military is second only to that of the president of the United States, who is the commander-in-chief. This position corresponds to what is generally known as a defense minister in many other countries. The secretary of defense is appointed by the president with the advice and consent of the Senate, and is by custom a member of the Cabinet and by law a member of the National Security Council.