I agree. "Red Crown" was a destroyer or cruiser that controlled the air war over the North from the North SAR location. I suppose an EC-121 may have taken control if the ship's radar went down, but I never heard of it.
IIRC, "Big Look" was the AF's EC-121. And "Deep Sea" was the Navy's EC-121, or VAQ A-3s........ our Spooks in the air.
If The Chief is around, he can set us all straight.
Of course never to be forgotten, the EC-121 intentionally shot down by the North Koreans in 1969. All 31 Americans onboard were killed. And the North Koreans not only admitted it, they bragged about it. And got away with it.
"Deep Sea 129".........
Remembered:
http://www.navalhistory.org/2010/04/15/15-april-1969-deep-sea-129-shootdown/