it detects organic and nonorganic objects hidden on a person and inside the person, money, cell phones, drugs, in the hair, on the body, in natural cavities. we had an incident where a woman was trying to smuggle amphetamine to an inmate in her tampon, which she had inserted inside. >> but in a prison that houses what are considered some of poland's most dangerous criminals, technology is only one part of the security equation. >> translator: two inmates, members of organized crime, were communicating illegally with inmates in other recreation areas. they refused to leave the area. our negotiations with the inmates did not succeed. that's why we made the decision to bring in an intervention unit. >> we knew before we arrived on the actual scene that it was a drill. simply a drill. but at the moment that we walked up, it was so life-like and real that we thought, wait a second. did they happen to stumble on a real situation on their way to the drill? >> they were in character. they were doing exactly as they were trained to do. and the officers that were playing the part of the inmates