What are the ECS locations mentioned?

The ECS locations referenced in this context are indeed The Tower, Horseshoe, and Radar Room. Each of these locations plays a significant role in operations, particularly in managing and monitoring air traffic and other critical activities associated with the operations of an airport or airfield.

The Tower is essential for overseeing flight departures and arrivals, providing instructions to pilots, and ensuring safe takeoffs and landings. The Horseshoe serves as a crucial communication point where information is exchanged among different departments and personnel involved in operations. The Radar Room is vital for tracking aircraft within the airspace and ensuring that they are safely distanced from one another, thereby preventing mid-air collisions.

In contrast, other combinations may include locations that are pertinent to an organization's structure but do not capture the full set of ECS locations relevant to this specific context. Thus, the correct answer correctly identifies the key operational locations used in the ECS framework.