One example was the award of the commendation with Operational Distinguishing Device to rescue squadrons of the U.S. Air Force and maritime patrol squadrons and helicopter squadrons of the U.S. Navy, when said units assisted the Coast Guard during search and recovery operations following the January 1986 loss of the NASA Space Shuttle Challenger.
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The CCGS John A Macdonald was awarded the U.S. Coast Guard Unit Commendation "for extremely meritorious service in the support of United States Coast Guard operations during the period of 23 September 1967 to 08 October 1967", during the Arctic West Summer (AWS) 1967 cruise by Admiral (ADM) Willard J. Smith, Commandant, United States Coast Guard.