Match the type of intelligence with the best description.

	1. Human Intelligence
	2. Signals Intelligence
	3. Measures and signatures intelligence
	4. Imagery intelligence
- A. B. C. D. E.	Open source intelligence

A.	Primarily done through satelites that provide significant detail images to monitor government and terrorist activities
B.	Information available through public or open records.
C.	A variety of electronic sensors throughout the world to gather information including radar, infrared, seismic and radiological detection devises.
D.	Collection of intelligence by field agents and other individuals, or human sources.
E.	Interception of electronic communications and deriving intelligence from those communications.