Which agency is responsible for providing current information to the tower about airport conditions?

The correct answer is the agency operating the airport, as this entity is tasked with maintaining up-to-date information regarding airport conditions, which includes runway status, weather updates, and any other relevant operational details. This information is crucial for the tower controllers to ensure safe and efficient aircraft movements on the ground and in the airspace surrounding the airport.

The agency operating the airport can include city or county authorities, airport authorities, or other designated organizations that manage the facility. They gather data and communicate it to the tower controllers to keep them informed of any changes that may affect operations.

While airport staff can also convey important information to the tower, they typically work under the larger umbrella of the airport's operating agency. Military operations, while significant at certain airports, do not generally provide routine updates about airport conditions to the control tower unless specific military presence affects operations. Local air traffic control might manage the airspace and provide clearance but relies on the airport operating agency for the current conditions regarding the airport’s operational status.