Lieutenant (junior grade) Marcus "Sundown" Williams is a naval flight officer trained on the Grumman F-14 Tomcat and a graduate of TOPGUN. He is LT Charles "Chipper" Piper's radar intercept officer (RIO).
He was later temporarily assigned as Maverick's RIO shortly after Goose's death. Sundown and Maverick had a fallout, because of Maverick still being upset over Goose's death.
Sundown is last seen at the TOPGUN graduation ceremony speaking to Chipper regarding Maverick's whereabouts and state of mind.
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