Answer:- While most African Americans serving at the beginning of WWII were assigned to non-combat units and relegated to service duties, such as supply, maintenance, and transportation, their work behind front lines was equally vital to the war effort.
Because Nixon was scared of the Soviets.
If the President, VP and Speaker of the House is unable to serve by death, incapacitation, impeachment, etc...the President Pro Tempore of the Senate will be the successor of the United States.
