BA 2 topics · 2 sources ScienceWaterbiological assessment.Bureau of Reclamation — Bureau of Reclamation Glossary Cite TechnologyDefenseBudget activity. The budget activity codes are: 01 Basic Research 02 Exploratory Development 03 Advance Technology Development 04 Dem/Val 05 EMD 06 Management Support 07 Operational Systems DevelopmentDoD Missile Defense Agency — MDA Glossary Cite