I'm not sure why an ex-cop would be trying to reveal interview techniques and directly help coach crooks. And wod, there sure are a lot of would-be defense attorneys here. I have an idea - how about just not breaking the law and you won't have to worry about police interviews.
Wow, there are a lot of would-be defense attorneys and crooks advising crooks how to get away with "it." How about just not violating the law? You won't have a thing to worry about.
This is a DEA agent, not ATF... maybe he should have been demonstrating drugs.