One getting away (7)
I believe the answer is:
evacuee
'one getting away' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for evacuee that I've seen before include "Person taken away from a place of danger" , "One moved from place of danger" , "One moved to safety" , "One removed to safety" , "Someone removed from place of danger" .)