Explanation:
After many long and difficult meetings, Kennedy decided to place a naval blockade, or a ring of ships, around Cuba. The aim of this "quarantine," as he called it, was to prevent the Soviets from bringing in more military supplies. He demanded the removal of the missiles already there and the destruction of the sites.
The National Marine Fisheries Administration is part of "federal" law enforcement, since it is technically a federal agency that is a "cabinet-level" department.