Short answers, pulled from the story.
USS Mount McKinley was built as an amphibious force flagship, a floating command post with advanced communications equipment and combat information spaces for the amphibious forces commander and landing force commander during large-scale operations.
USS Mount McKinley was commissioned at the Philadelphia Naval Shipyard on the 1st of May 1944, after being laid down as the transport Cyclone in July 1943 and renamed that December.
General Douglas MacArthur was aboard USS Mount McKinley in September 1950, directing the amphibious assault at Inchon that forced North Korean forces to retreat north.
USS Mount McKinley served as flagship for Operation Crossroads at Bikini Atoll in July 1946, flying the flag of Admiral William H. P. Blandy, commander of Joint Task Force One during the atomic tests.
USS Mount McKinley served in Southeast Asia as flagship of the 7th Fleet Amphibious Strike Force, coordinating the landing of Marine reinforcements at Da Nang and Hue in South Vietnam.
USS Mount McKinley earned four battle stars for World War II service and eight battle stars for Korean War service, along with a Vietnam Meritorious Unit Citation.