One of the reasons for the use of the Vulcans was to conserve Sea Harrier resources for the air defence of the naval forces .
The plan required resources to conduct a daylight photo reconnaissance sortie over the airfield for the purpose of damage assessment .
One of the reasons for the use of the Vulcans was to conserve Sea Harrier resources for the air defence of the naval forces , but the plan required them to conduct a daylight photo reconnaissance sortie over the airfield for the purpose of damage assessment .