Through its transportation security program, UGPTI has begun conducting training for law enforcement, first responders, border, and homeland security professionals on a growing threat posed by an extremist movement across the United States known as the Sovereign Citizen Movement. Adherents to the Sovereign ideology believe that the United States government has no jurisdiction over them and, therefore, they can behave as they deem fit. Sovereigns "de-register" their motor vehicles with the state DMV, refuse to obtain drivers licenses and stop paying taxes. In some cases, Sovereign traffic stops have escalated into violence and even resulted in the murder of two state troopers. With most of the Sovereign incidents occurring during routine traffic stops, UGPTI's program is gaining momentum quickly among security professionals eager to understand and prepare for this threat.