Air Force Link - America's Air Force
http://www.af.mil/

I'm taking part in application architecture development and implementing Login and Role processing section sections of the application (which are basically responsible for the security and permission policy within the system). The permissions for reading some data within DB are stored in XML files, which have file reading permissions for specified user. I've developed selecting procedure to choose necessary XML file for authenticated user using Windows API (CFX tag was written). I've designed and created expiration mechanism on both client and server sides. I'm also working on transferring XML content into CF structure to provide other programmers with convenient API to permissions part of the system.