instance, two officers from customs and two from police – who then get acquainted with each other's tasks and expertise. Another form of PCB cooperation is in criminal intelligence – whereby the different disciplines share the same intelligence and situation centers. Finnish Defence Forces The Finnish Defence Forces have provost duties and jurisdiction within military installations. The Defence Forces also have the right to investigate all military crimes and most crimes committed by service-men against non-civilians. In addition, the Defence Forces have the right to conduct counter-espionage and counter-sabotage activities related to national defence. However, the Finnish Security Intelligence Service conducts actual criminal investigations of state security-related crimes within the Defence Forces. Military unit commanders have jurisdiction of investigations over minor infractions. The power to arrest is delegated to the company commander level. More serious crimes are investigated by the investigative section of the Finnish Defence Command or by the military attorneys of lower command levels. Security-related military police activities and all technical surveillance activities are carried out by the investigative section of the Defence Command. The Defence Forces do not have the right to conduct wiretaps or other similar measures on Finnish civilian telecommunications. The police may request assistance in performing their duties from the Defence Forces or other agencies – for example when special equipment or competency is required. The operation itself remains under the command of the police. Military units (brigades) usually keep a company under readiness for assistance at all times; the turn rotates among companies and requires them to forego regular leave. In practice, the Defence Forces have assisted in disposal of explosives, provided Pasi armored vehicles for operations against heavily armed suspects (e.g. the Kauhajoki shooting), and conscript manpower for searching missing persons in terrain and in supporting the 2015 refugee crisis. Finnish military police and investigative command would assume a more extensive set of tasks in wartime. Miscellaneous Games and fisheries wardens (erätarkastaja) are law enforcement officials employed by Metsähallitus ("Forest Administration"), who inspect and enforce permits within state-owned lands managed by Metsähallitus. The wardens have the same police training and powers as regular police. Nuclear security guards (turvahenkilö) have a special status defined in the Nuclear Energy Act (1987), different from that of regular private security guards or regular police. They are empowered as "personnel temporarily assisting the police", and as such, have the same right to use force as the police,