Police crisis team (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
swat
'police crisis team' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for swat that I've seen before include ".`Twas quite a blow" , "Hit smartly" , "Hit with a sharp blow" , "Deal a quick and effective blow (to)" , "Hit (flies, etc)" .)