“Chris Costa’s Premier Low Light Course AAR,” a summary of the after action report of Costa’s Low Light Course in Wyoming featuring the SwitchBack Flashlight Ring, at Predator Intelligence on July 3, 2014:

Predator Intelligence Article“All students received Costa SwitchBack Flashlight Rings from Thyrm and learned the Switchback Technique’s advantages, especially with a handgun…. Considering the probability that a violent encounter will occur after dark, it’s definitely worth getting this kind of training and practice, especially if you can do it in a beautiful place like Jackson.”