DOD Department of Defense
DOE Department of Energy
FFRDC federally funded research and development center
FTE full-time equivalent
FY fiscal year
GDP gross domestic product
GSP gross state product
HHS Department of Health and Human Services
IRI Industrial Research Institute
NASA National Aeronautics and Space Administration
NIH National Institutes of Health
NSF National Science Foundation
OPM Office of Personnel Management
PPP purchasing power parity
R&D research and development
SIC Standard Industrial Classification
SSA Social Security Administration
S&Es scientists and engineers