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
Cuban Missile Crisis missiles stood on ready alert, some of which targeted Cuba, and Air Defense Command (ADC) redeployed 161 nuclear-armed interceptors to 16 dispersal fields within nine hours, with one third maintaining 15-minute alert status. Twenty-three nuclear-armed B-52s were sent to orbit points within striking distance of the Soviet Union so that it would believe that the US was serious. Jack J. Catton later estimated that about 80 percent of SAC's planes were ready for launch during the crisis; David A. Burchinal recalled that, by contrast: By October 22, Tactical Air Command (TAC) had 511 fighters plus supporting tankers and reconnaissance aircraft