Need help identifying type of hat used in Firefly episode Ariel

[swright007]

I'm trying to replace a hat for my Firefly Ariel ambulance tech costume. Closest I have found is an Army patrol style cap, but I know that isn't exactly right. Can anyone better identify the type of hat?

 

[montysaurus]

Looks like an OTTO military cap.

 

[Mike J.]

Is this the hat in question?