Today, FEMA is one of four major branches of DHS. About 2,500 full-time employees in the Emergency Preparedness and Response Directorate are supplemented by more than 5,000 stand-by disaster reservists.
The source for my claim is from Fox News last night - Bill Sammon from the Washington Times quoting Major Garrett. Clearly, according to your information, Garrett is either wrong or reporting on a relevant subset.