cfhttp to save an url image locally

I have been googling for a week to find a working example of this, but can't find anything that works. I have 2 servers at work. One is a web server and the other is a SANS server with Patient protected images. The web server has URL access to the SANS so I can display images but not path access so I cannot force download them. I posted here last week and someone suggested using cfhttp to get the images and store it locally on the web server then deliver it with cfcontent. Can anyone show me an example on how to do this or point me to a working example. Thanks!