Because of the need to separate data carrying different security classifications in a system, support for Multiple Independent Levels of Security (MILS) is an emerging requirement for many military systems. While MILS is common in communication systems, its application in graphics systems is growing along with the need for a Common Criteria evaluation of systems having this requirement. Presagis software has been deployed in such systems, and we are continuing to develop our products in this area in collaboration with our partners.