Don't confuse oyster shell with grit. Grit is insoluble. It stays in the gizzard and it's used to grind food. Oyster shell dissolves in the gut and its job is to add calcium to the diet of laying hens.
Kennedy's strategy of flexible response, managed by Robert McNamara, was aimed to reduce the possibility of war by miscalculation. Kennedy's administration contributed to the peaceful resolution of the Cuban Missile Crisis and refrained from further escalation of the 1961 Berlin Crisis.everal of them were from the foreign policy think tanks. Kennedy had been interested in the issues of war and peace since his youth. In his inaugural address Kennedy encapsulated his Cold War stance as following: Let us never negotiate out of fear. But let us never fear to negotiate.
The Johnson Administration. New president Lyndon B. Johnson inherited a difficult situation in Vietnam, as the South Vietnamese government was in shambles and the Viet Cong was making large gains in rural areas of the South. Although Johnson billed himself as a tough anti-Communist, he pledged to honor Kennedyâs limited troop commitments in Vietnam. Indeed, Johnson handled the Vietnam situation moderately during the early part of his term, striving to continue Kennedyâs programs without dramatically escalating the war.