Which of the following entities operates radio aids to air navigation in the United States?

The correct choice indicates that multiple entities, including the Federal Aviation Administration (FAA), Lockheed Martin, and the Department of Defense (DOD), play a role in operating radio aids to air navigation in the United States.

The FAA is the primary agency responsible for ensuring the safety of civil aviation. One of its key functions is to develop and maintain the air traffic control system, which includes the operation of radio navigation aids like VORs (VHF Omnidirectional Range) and NDBs (Non-Directional Beacons). These navigational aids are crucial for aircraft positioning and route guidance.

Lockheed Martin, as a significant contractor in the aerospace and defense industry, works closely with the FAA and other government entities. They provide advanced technologies, support systems, and maintenance for various navigation aids, enhancing the efficiency and safety of air navigation.

The Department of Defense (DOD) operates its own air navigation systems for military aviation but may also collaborate on certain civil aviation systems for combined airspace use and safety. The DOD has vested interests in maintaining a safe airspace that includes civilian and military operations, which further emphasizes the interconnectedness of these organizations in the field of air navigation.

Therefore, it is accurate to state that each of these entities contributes