1. Community Codes Free and shared resource Ongoing distributed development by both research and operational communities – Maintained under version control Periodic releases made available to the community – Includes latest developments of new capabilities and techniques Centralized support – Provided in collaboration with developers

2. Software Management Code Maintenance –Run regression test suite following updates to repository trunk –Update regression test suite as necessary to keep current with software capabilities –Extensive testing of software components prior to release –Investigate bugs revealed by our testing or user inquires Fixes proposed and checked into code repository to guarantee available in the next release Code Evolution –Support the addition of new capabilities and techniques from the community DTC visitor program Underlying principle – safe guard operational capability while allowing on-going development by distributed developers

3. User’s Website System component descriptions Documentation –User’s Guide –Presentations Registration Software downloads Bug fix reports User support information –Email helpdesk Tutorial information

4. Tutorials Online Tutorial –Step-by-step instructions on downloading, compiling and running system Resident User’s Tutorial –Lectures given by system experts –Hands-on practical sessions w/ one-on-one assistance