At Edwards Air Force Base, Calif., Jackie Cochran flew a Lockheed F-104G Starfighter over a 100 kilometer closed circuit without payload, averaging 1,303.18 mph.

Source: https://www.aerotechnews.com/blog/2023/05/27/on-this-date-162/

If Apple can tie together the buyer and the merchant, with both of them using iPhones or iPads to process payments, Apple can then create a "closed circuit that doesn't require banking partners or networks run by Visa or Mastercard.

Source: https://seekingalpha.com/article/4595856-apple-and-us-payments-system?source=feed_all_articles

The American pavilion presented the first closed circuit television, leaving guests speechless since it was the first time they could see themselves on screen.

Source: https://greekreporter.com/2023/09/09/thessaloniki-international-fair-a-historic-flashback-of-south-east-europes-biggest-event/

The incident caught on the closed circuit camera of the fastfood major’s outlet in the Kompally area of Hyderabad has gone viral on social media.

Source: https://www.siasat.com/video-rat-bites-8-yr-old-boy-at-fast-food-outlet-in-hyderabad-2544754/

The murder was caught on closed circuit television.

Source: https://jamaica-gleaner.com/article/lead-stories/20230412/nypd-hunting-killers-who-gunned-down-jcan

"The strength of this case is the strength of so many of these cases; it's photographs, it's social media postings, it's closed circuit television.

Source: https://abc7chicago.com/chicago-police-officer-karol-chwiesiuk-january-6-united-states-capitol-attack-charges/13625323/