Raymond Jellicho was a Federation Starfleet line officer on active duty in the 23rd century.

From 2272-2275, under the command of Jellicho, USS Avenger served as an engineering testbed vessel to prepare for Starfleet’s plans to embark on a frigate refit program much like the one conducted in 2271-2273 for the Constitution-class heavy cruisers. (Star Trek: Avenger)


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