According to the Warren Commission, a second shot that struck the President was recorded at Zapruder film frame 313. The Commission made no conclusion as to whether this was the second or third bullet fired. The presidential limousine then passed in front of the John Neely Bryan north pergola concrete structure. The two investigative committees concluded that the second shot to hit the president entered the rear of his head (the House Select Committee placed the entry wound four inches higher than the Warren Commission placed it) and passed in fragments through his skull; this created a large, "roughly ovular" [sic] hole on the rear, right side. The president's blood and fragments of his scalp, brain, and skull landed on the interior of the car, the inner and outer surfaces of the front glass windshield and raised sun visors, as well as on the front engine hood and the rear trunk lid. His blood and fragments also landed on the follow-up Secret Service car and its driver's left arm, as well on the motorcycle officers who were riding on both sides of the President just behind his vehicle.  
Kennedy was the youngest person elected . President and the first Roman Catholic to serve in that office. For many observers, his presidency came to represent the ascendance of youthful idealism in the aftermath of World War II. The promise of this energetic and telegenic leader was not to be fulfilled, as he was assassinated near the end of his third year in office. For many Americans, the public murder of President Kennedy remains one of the most traumatic events in memory—countless Americans can remember exactly where they were when they heard that President Kennedy had been shot. His shocking death stood at the forefront of a period of political and social instability in the country and the world.
As an upperclassman at Harvard, Kennedy became a more serious student and developed an interest in political philosophy. In his junior year, he made the Dean's List .  In 1940, Kennedy completed his thesis, "Appeasement in Munich", about British participation in the Munich Agreement . The thesis became a bestseller under the title Why England Slept .  In addition to addressing Britain's failure to strengthen its military in the lead-up to World War II, the book also called for an Anglo-American alliance against the rising totalitarian powers. While Kennedy became increasingly supportive of . intervention in World War II, his father's isolationist beliefs resulted in the latter's dismissal as ambassador to the United Kingdom, creating a split between the Kennedy and Roosevelt families.