Air force (6)

I believe this is a double definition.
'air' is the first definition.
(I know that air can be written as strain)
'force' is the second definition.
(strain is a kind of force)
(Other definitions for strain that I've seen before include "Overtired" , "Tension - tune" , "variety" , "Race" , "Screen" .)
'air force?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for gust that I've seen before include "Puff (of wind)" , "A big blow" , "Squall" , "14 [OUTBURST]" , "Sudden rush of wind" .)
'air force?' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for gale that I've seen before include "Force 8 wind" , "Strong wind" , "Squall" , "High wind" , "A wild storm" .)
'air force?' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for lift that I've seen before include "Take" , "Raise - hoist" , "Means of access to different floors" , "Raise; elevator" , "Raise - shot in the arm" .)