Images in this challenge are copyrighted to their respective owners:
- Catalyst Labs
- Olluga Gifts
- Erik DePrince
- TeeTurtle
- Dualororua
- LunimeGames
- Warner Bros
- Lilyu
- drawcentral.com
- Angie R
- et. al. 
and are used under the doctrine of fair use for non-commercial academic research. 

Capture the Flag Challenge 
by Paul Hempshall - https://www.paulhempshall.com
