I found some information about the Drug Enforcement Administration (DEA) Aviation Division and what aircraft are used as well as where they operate from.:
http://dcnewsroom.blogspot.com/2023/12/dea-contract-documents-provide-detailed.html
And some additional information on DEA leases for hanger space:
https://dcnewsroom.blogspot.com/2020/10/atlantic-aviation-hanger-lease-for-dea.html
The DEA air assets are often heard using the FLINT call sign. Some sources believe that FLINT stands for FLying INTelligence.