Certified Emergency Manager 
channel electron multiplier 
Combined Effects Munition 
Continuous Emission Monitor 
continuous emissions monitoring 
cumulus ensemble model 
Center for Electron Microscopy 
Centro Esercizio de Manufenzione 
Channel Electron Multipliers 
Combined Effects Munitions 
Communications-Electronics-Meteorologica… 
Contagious equine metritis 
Contract Equipment Manufacturer 
Conventional Electron Microscope 
Cooperative Environmental Management 
Corrected Effective Medium 
Calcium Europium Manganate 
captured enemy materiel 
carboplatin, etoposide and melphalan 
cascade exciton model 
cellulose ester membranes 
Cement 
Cementite 
Cemetery 
Center for Electromagnetics 
Center for Electro-mechanics 
Center for Enterprise Management 
Center for Enterprise Modernization 
Center for Entrepreneurial Management 
Center for Environmental Mechanics