"George K. MacKenzie" was deployed to Vietnam in 1971 again with the mission of fleet defense and shore bombardment with other vessels, including the cruiser USS Newport News} In the Spring of 1972 she participated in Operation Freedom Train conducting shore bombardment of targets in North Vietnam and in operation Linebacker 1 and Linebacker 2 it may be noted here that during this ardous tour of duty she fired 16,549 rounds of 5"/38 ammunition.