Dog Training - Clicker training for aggressive dogs / changing the mindset

Not sure where to start so I’ll just say this. Chloe’s owner has done amazing things when most would have quit. This dog is a lot. Very dog aggressive and explodes and turns on the owner. We’ve done a complete turnaround. Not with an e collar a prong collar or punishment but with a clicker. Positive confusion. We are heading in right direction. Sorry for the video quality but have to focus on training not filming My E-collar book: https://amzn.to/2J93Cjq http://www.pakmasters.com