These CAPs would be under control of specialized fighter direction teams assigned to the destroyers.
These FD teams could also be assigned control of the standing task group CAP as directed by the task group FDO.
Some of the destroyers were designated “Tom Cat” destroyers with extra CAP aircraft having the job of examining
every returning carrier raid to make sure no kamikazes were sneaking in under cover of the returning planes as they circled the Tom Cat destroyer.
Because of the hazardous nature of the isolated duty, other ships, such as landing craft with additional AA guns, accompanied the picket destroyers. [15, pp.145-147]