Both the NSA and the DIA are under the DoD. Both are intelligence agencies and are part of the IC. All of the IC members fall under the Director of National Int

Both the NSA and the DIA are under the DoD. Both are intelligence agencies and are part of the IC. All of the IC members fall under the Director of National Intelligence (DNI). The NSA and DIA differ in their missions. The NSA is primarily focused on Signal Intelligence (SIGINT) whereas the DIA is focused on Human Intelligence (HUMINT), mostly pertaining to foreign militaries.