- https://wptavern.com/casper-a-free-ghost-style-wordpress-theme-based-on-underscores (archive)
- https://winningwp.com/casper-a-ghost-like-wordpress-theme/ (archive)
- https://racing.dronelife.com/2016/07/03/meet-brothers-morrow-drone-racing-promoters-extraordinaire/
- http://www.charlotteobserver.com/news/local/article91479782.html
- https://www.charlottefive.com/drone-racing/
- Drone Speed Challenge #2 (youtube: https://www.youtube.com/watch?v=bI-RsY7jj6M
- Drone Speed Challenge #2 (article): https://www.businesswire.com/news/home/20180625005193/en/Speed-Comcast-Aerial-Sports-League-Host-Biggest
- Drone Speed Challenge (Pilot Profile): https://www.youtube.com/watch?v=5Wxv4FQJd8k
- Drone Speed Challenge (News footage): https://www.youtube.com/watch?v=fp-0mX8sv7Y
- Drone Speed Challenge (Website): http://www.aerialsports.tv/cachallenge