Cuban Missile Crisis forces. Kennedy met with members of EXCOMM and other top advisers throughout October 21, considering two remaining options: an air strike primarily against the Cuban missile bases or a naval blockade of Cuba. A full-scale invasion was not the administration's first option. McNamara supported the naval blockade as a strong but limited military action that left the US in control. The term "blockade" was problematic. According to international law, a blockade is an act of war, but the Kennedy administration did not think that the Soviets would be provoked to attack by a mere blockade. Additionally, legal experts at the
R-16 (missile) rocket exploded on the pad killing over 100 personnel. After decades of coverup, the government finally revealed this incident, referred to as the Nedelin catastrophe. After the delays associated with the deaths of most people working on the project, the first flight of the missile took place on 2 February 1961. Initial operational capability was achieved on 1 November 1961. The missile continued to serve until 1976, with maximum deployment numbers reached in 1965 with 202 missiles deployed. The Soviets had fewer than 50 of these missiles deployed in 1962 during the Cuban Missile Crisis. It is possible that only