This past weekend I attended Massad Ayoob's MAG 20 Armed Citizens Rules of Engagement. Take some time to read Mas's bio. I won't repeat it here but he is the foremost expert on civilian use of force and self defense shootings in the United States. He has 43 years of LEO experience and expert witness testimony. He has also written several authoritative texts on the the subject. I have been trying to attend this course for several years so was glad I finally had the opportunity
MAG20 stands for Massad Ayoob Group 20 hours. This course was all of 20 hours. 10 hour days with 10 minute breaks after every block. Lunches were working affairs eating with one hand and taking notes with the other. It was definitely a grind. I wrote at least 20 pages of notes over the two day course.
There were about 15 people in the class from all walks of life. I won't get into specifics of the course as much of it is proprietary and I don't want to inadvertently post something I shouldn't. I will say however there was lots of information that will take some time to digest and I will definitely need to reread my notes to aid in my comprehension.
Mas is not considered the Subject Matter Expert on this for nothing. He constantly interjected cases by name to illustrate his points. Looking up and researching all of them will be a class in itself. If you carry a gun or anything else to defend yourself or others if needed, you would be negligent not to get this information.