It is difficult to find a concise summation of the major intelligence disciplines (INTs) used by the U.S. intelligence community.

It is difficult to find a concise summation of the major intelligence disciplines (INTs) used by the U.S. intelligence community. They are summarized below for convenience.
The Intelligence Community has been built around major agencies responsible for specific intelligence collection systems known as disciplines. Three major intelligence disciplines or “INTs”—signals intelligence (SIGINT), imagery intelligence (IMINT), and human intelligence (HUMINT)—provide the most important information for analysts and absorb the bulk of the intelligence budget. SIGINT collection is the responsibility of NSA at Fort Meade, Maryland
After reviewing the capabilities and limitations of the different INTs, do the following:
-Select a Homeland Security issue (terrorism, drugs, human trafficking, counterfeiting, counterintelligence, or another) that is important today.
-Briefly explain which INT is most relevant to this issue, and how the capabilities of that INT are related to the Cold War history.
Remember to cite your sources and provide a list of references.