On December 7th 2011 Grandmaster Boehlig was invited to hold a seminar in control and restrain techniques for one of the most famous and feared special police unit in the world.

The Batalhão de Operações Policiais Especiais (Portuguese for Special Police Operations Battalion), mostly known by its acronym BOPE, is a special forces unit of the Military Police of Rio de Janeiro State, Brazil.

Due to the nature of crime in favelas (poor neighborhoods) , BOPE units have extensive experience in urban warfare as well as progression in confined and restricted environments. It also utilizes equipment deemed more powerful than traditional civilian law enforcement.

The origins of BOPE date back to January 19, 1978, when the Special Operations Company Nucleus (in Portuguese:Núcleo da Companhia de Operações Especiais or NuCOE) was formed and placed under the command of the chief of staff for the state's Military Police.

In 1982 the company was moved to the Riot Control Battalion (Batalhão de Policia de Choque), thus becoming part of that unit changing its name to Special Operations Company (Companhia de Operações Especiais or COE). In 1984 the name was changed once again to NuCOE and was, again, under the command of the chief of staff.

In 1988, the Special Operations Independent Company (Companhia Independente de Operações Especiais or CIOE) was created, with its jurisdiction spanning all over the State of Rio de Janeiro. It became a battalion on March 1, 1991.

Due to the effort of the instructor for self-defense within BOPE and the negotiation of WTI´s Brazilian national director Elder Lima a cooperation between BOPE and Wing Tsjun International began and GM Boehlig visited the battalion´s camp in Maceió together with Elder Lima.

For a duration of three hours they trained the officers in empty-handed self-defense and Dai-Sifu Boehlig introduced the new BDS police program which offers effective methods to control or restrain a subject.

Motivated by the training the officers grew very interested in the effectiveness of the Wing Tsjun system and asked how the system would work in a free sparring environment. Because of this GM Boehlig let some of the officers attack him freely and was able to prove the effectiveness of the system even in a tight space once again.

Further cooperations were discussed and the next seminar agreed upon so that Wing Tsjun now has the chance to become a part in the regular training of the BOPE.