vaccum line going no where

I have a 94 s10blazer, and a vin W engine, and the 700r4 transmission. I have noticed a vaccum line coming from the transmission.  The end looks like it went over something,  and must have fell off. The hose says 7/32 or something like, that any one know where this come from. My second thought is that its just a breather tube any help will be welcome thanks.

Yup it's a vent.  Typically it has a small fitting with a foam filter over the end...

thanks that makes me fill better.