Fighter adapted for shifting cargo (7)
I believe the answer is:
freight
'shifting cargo' is the definition.
'freight' can be an answer for 'cargo' (synonyms). I'm not certain of the 'shifting' bit.
'fighter adapted' is the wordplay.
'adapted' indicates an anagram.
'fighter' with letters rearranged gives 'FREIGHT'.
'for' is the link.
Can you help me to learn more?
(Other definitions for freight that I've seen before include "that's carried by rail and road" , "Consignment" , "Transport of bulk goods" , "Goods in transit" , "Commercial transport" .)