The seminar was called "The Bulletproof Warrior," and the instructors urged the law enforcement officers in the hotel conference room to make the decision to shoot if they ever feel their lives are threatened.
Videos of bloody shootouts between police and civilians emphasized a key point: Hesitation can kill you.
In the audience at the May 2014 seminar was a young St. Anthony police officer, Jeronimo Yanez, city records show. He's now known around the world as the officer who killed Philando Castile minutes after making a traffic stop in Falcon Heights last week.
Amid intensifying demands for changes in police training in the wake of the shooting deaths of Castile and others, such "survival" courses for officers are flourishing nationally. But some in law enforcement are distancing themselves from the approach.
The Houston Police Department, for example, won't pay for its officers to attend the Bulletproof Warrior seminar, which is put on by an Illinois for-profit company called Calibre Press.
And the leader of an international police training association said he thinks some seminars like those offered by Calibre and other firms foster a sense of paranoia among officers.
"Police training became very militaristic and it caused a lot of the problems that are going on in the nation," said Michael Becar, executive director of the International Association of Directors of Law Enforcement Standards and Training, with offices in Idaho and Washington, D.C.
Calibre recently changed the name of its Bulletproof Warrior course after complaints from police departments about the implication of the word "warrior."