Anyone apart of other groups or organizations related to EM?

In our area there tends to be alot of downtime, especially in the winter and at points in the mid summer. Is anyone apart of an any groups like SAR or somthing similar or withing the relm of EM/Response they do on the side for a bit of pace change up? I enjoy EM work but desk job life can become mind numbing....

Edit* I'm in WI btw