In the larger cave fortresses, he writes, the Japanese had installed electric lighting, ventilating systems, stairs, telephones, and radio communications.
The only reason that some domestic flights have resumed is because this temporary radio communication has been set up by Qatari engineers between pilots and air traffic controllers.
Cunard's conservative nature enabled his company to see off rivals and to take a measured and steady approach when it came to the introduction of new technology like radio communication.