Calibre Press is a company based in Glen Ellyn, Illinois that conducts training for law enforcement officers in the United States.
The company is owned by Jim Glennon, a former police lieutenant in the Chicago suburb of Lombard, Illinois. Glennon purchased Calibre Press in 2012.
The company offers training seminars for police, and in 2016 was reported to offer 190 classes per year (an increase from 35 classes a year in 2012); among these are The Bulletproof Warrior, Surviving Hidden Weapons, Arresting Communication, and The Bulletproof Warrior. Calibre Press instructors (nine in all, including Glennon) make presentations to around 20,000 officers a year.
Bloomberg BusinessWeek reported that "Like many companies in the business, Calibre promotes a 'warrior' mentality for police, likening cops to soldiers and focusing on conflict, vigilance, and martial skills." The content of the "Bulletproof Warrior" seminar and associated booklet in particular has been criticized by the executive director of the Police Executive Research Forum for portraying the world as being a "constant and increased threat to officers" and for emphasizing that "officers are allowed to — and need to — use more force than they may believe, and to use it pre-emptively." Glennon denies that the courses offered by the course promote an overly aggressive or militaristic approach to policing, noting that the company also teaches courses on desescalating tense situations and about bias.