Members of the D.O.T. are selected, from the main police force, based on their reputation of being hard-working, tolerant and patient officers, not easily provoked or over-zealous. Besides having the leadership traits of a model, modern police officer, Fuerza-de-Choque candidates must meet the minimum height requirement of or be talented in martial arts or another form of self-defense. Besides crowd and riot control duties, "Fuerza de Choque" officers perform search and rescue, disaster and directed patrol operations. Its membership may be found within the ranks of the regular police force (patrol/investigations) as well as in full-time SWAT teams.