Drag a scout free -- this rescue worker might (10)

I believe the answer is:

coast guard

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'this rescue worker might' is the definition.
The definition suggests a singular noun which matches the answer.

'drag a scout free' is the wordplay.
'free' is an anagram indicator.
'drag'+'a'+'scout'='dragascout'
'dragascout' with letters rearranged gives 'COAST GUARD'.

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(Other definitions for coast guard that I've seen before include "Member of) marine rescue organisation" , "Maritime service" , "Patroller of national waters" , "Maritime force for defence, rescue, prevention of smuggling etc" .)

I've seen this clue in The Telegraph.

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