Following the revelation that the revolutionaries may have received communist bloc training, Operation Parthenon was replaced by Operation Boris. This called for a parachute assault on Unguja from Kenya, but was later abandoned due to poor security in Kenya and the Kenyan government's opposition to the use of its airfields. Instead Operation Finery was drawn up, which would involve a helicopter assault by Royal Marines from HMS "Bulwark", a commando carrier then stationed in the Middle East. As "Bulwark" was outside the region, Finery's launch would require 14 days' notice, so in the event that a more immediate response was necessary, suitable forces were placed on 24 hours' notice to launch a smaller scale operation to protect British citizens.