sentences:  The warship also conducted several NATO training exercises during this period.On 26 August 1952, she voyaged above the Arctic Circle east of Greenland to take part in Operations "Mainbrace" and "Longstep" before sailing to the Mediterranean in October of that year.Following an overhaul at Philadelphia in early 1955, "Benner" participated in 14 to 27 March Operation "LantFlex 1" — an amphibious exercise off Newfoundland — and then made another summer midshipmen cruise, visiting Málaga, Spain; Plymouth, England; and Guantanamo Bay, Cuba; before returning to Newport on 4 August.