Flash Data to server

Question

I have a flash application that sends HTTP Request to the server and get back data. Very standard way.

So, when I send HTTP request in Flash, can I see the request header in the client side? e.g. using Fiddler, Firebug..etc.

I tried Fiddler and Firebug, and it 'seems' like the request is hidden or not catch by the program.

if I can see the request header, will it be text or encrypted?