9. Intelligence Support Activity (ISA)
The Intelligence Support Activity (ISA), also known as “The Activity,” specializes in clandestine human intelligence (HUMINT) and signals intelligence (SIGINT) operations. Operating under the Joint Special Operations Command (JSOC), it provides actionable intelligence to elite units like Delta Force and SEAL Team Six. Details about ISA are extremely limited, comparable to British or Israeli special operations intelligence arms. More at The Intercept.
