- Correspondence to Andrew Benjamin Dagens, Royal Air Force No 22 (Training) Group, High Wycombe, UK;
- Received July 3, 2020
- Revision received November 12, 2020
- Accepted December 2, 2020
- First published December 24, 2020.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.