| 31. | The ship now specialized in antisubmarine warfare ( ASW ) procedures and periodically deployed to the western Pacific.
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| 32. | During 1968, she operated with the antisubmarine warfare ( ASW ) forces attached to the Atlantic Fleet.
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| 33. | For 4 weeks she operated with an Atlantic Fleet research group, developing new equipment for antisubmarine warfare.
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| 34. | For several days, " Alstede " participated in antisubmarine warfare exercises in Block Island Sound.
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| 35. | In addition, there were three main blanket campaigns : antisubmarine warfare, ground combat and air combat.
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| 36. | The destroyer was decommissioned on 31 January 1970 to undergo prolong antisubmarine warfare modernization at the Philadelphia Naval Shipyard.
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| 37. | Afterwards, the destroyer participated in extensive antisubmarine warfare exercises off the coast of North Carolina and Puerto Rico.
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| 38. | Following her arrival at Pearl Harbor on 5 November, the carrier participated in antisubmarine warfare and gunnery exercises.
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| 39. | In August, she returned to Pearl Harbor and resumed training exercises including torpedo firing and antisubmarine warfare drills.
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| 40. | That assignment was augmented by duty with various aviation and surface units in a series of antisubmarine warfare exercises.
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