real cases where U really needed to drop weight

[flots am]

I am wondering if there are any folks out there that have had to drop weight and why?
Just curious about what real situations force people to drop their weights.
Thanks,

I've dropped other diver's weights at the surface a few times. It keeps a diver panicking on the surface from going back down, and also gives a little altitude which tends to calm them down.

Flots