Which component of DEWS senses direct or scattered LASER energy from a range finder or weapon?

The correct answer is the Laser Warning Receiver (LWR) because this component is specifically designed to detect and identify laser energy, whether it is coming directly from the source or is scattered from objects in the vicinity. In the context of electronic warfare and defense systems, laser warning receivers play a crucial role as they enable platforms to recognize potential threats from range finders or laser designation systems used by enemy forces.

When an LWR detects laser energy, it can alert the crew or the aircraft's onboard systems, allowing for timely countermeasures or evasive actions to be taken. This capability is particularly important as laser systems can be used for targeting, guidance, or marking hazards for precision munitions, making the detection of such threats critical for operational safety and mission success.

Other systems listed do not perform this specific function. For example, the Countermeasure Dispensing System (CMDS) is focused on dispensing countermeasures such as flares and chaff to mislead incoming missiles, while the Missile Approach Warning System (MAWS) is designed to detect the presence of incoming missile threats. The Radar Warning Receiver (RWR) primarily identifies radar signals used for targeting or tracking rather than laser energy.