Request for Comments on NSA IAM and NSA IEM

Does anyone have experience with NSA's Infosec Assessment Methodology and Infosec Evaluation Methodology? Through my local ISSA chapter, I've signed up to take courses on both programs for a combined price less than that offered for the IAM alone at another venue. Being a consultant in the DC metro area, I believe I am going to hear NSA IAM and IEM mentioned more frequently. Any thoughts?