(MODS: Please move if there is a better place for his post)
Perhaps not quite CCW, but browsing through the categories several times, this seems 'closest'
QUESTION:I've done quite a bit of searching (apparently not enough) to find out the recommended way to 'clear' under a bed, behind a desk, etc.
Lots of stuff on 'slicing the pie', staying close to a wall, where to stand when opening a door, but ...
I've not been able to find any suggested techniques, other than '... When clearing a bedroom, be sure to check under the bed'.
If it is a bed that has a ruffle around it, one can't see under it without lifting up the cloth. Seems kind of dangerous to perhaps lift it up, bend down to take a look, and possibly have a gun in your face from someone hiding under there.
Could lift it up with a long stick, but it may take some time to go into other 'uncleared' areas to find an appropriate stick.
I also hear people say 'Don't attempt to clear a house by yourself...call the police to do it.'
This is a fine opinion, but it does not answer the question of how to do it properly
...or
How does a trained professional 'clear' under a bed?