The US Department of Defense has publish ed there views on adopting Free and Open Source.

The Software Development and Java Enterprise Edition stack is mainly focused from using Open Source products, such as JBOSS and TOMCAT. We can see Open Source adoption throughout the DoD in managing application delivery, data centre infrastrucutre and management, security, and control.

Please review the strategic guideline and the adopted open source projects here: http://cio-nii.defense.gov/sites/oss/