Alot of these groups have been utilizing what is happening in the Open Source Community and a lot of them have even given back to it.
Well now the U.S. Naval Oceanographic Office, which relies on Linux for many of its information-gathering activities, has linked with the Open Source Software Institute (OSSI) to study how the Navy might improve its use of open-source programs. After an initial internal review, we found significant interest in the use of open-source software, particularly Linux, within some of our departments, John Lever, the Oceanographic Office's chief information officer, said in a statement. He said "the agreement would allow the office to explore expanding Linux use into even more areas. This is an excellent opportunity for members of the open-source community to work with representatives of the Navy, OSSI chairman John Weathersby said in a statement.
The open-source model requires developers to make their software improvements available to the community and allows all programmers direct access to the software source code, which can be modified or customized at will. This has sparked a huge community based group of developers each giving away the source code for everything they write from around the world to participate.