[A.A. Cunningham]

that make up the B-52G egress systems.

Correction: that made up the B-52G egress systems. Only H models are still in service.

The B-52H had a crew of six until 1991 when the gunner position was eliminated and the tail gun deactivated and removed.

[cmdr straker]

Your diagram is a bit off.

Pilot behind him about 10 feet is what was the gunners seat (left side of aircraft)
copilot and behind him about ten feet is the EWO seat( right side of aircraft)