Laminar armour only of a breast-plate. While laminar armour was made from hardened seal leather and often knee long, or even longer. However late lamellar armour made from metal (iron or steel or even brass) and could be as long as laminar armour. Both lamellar and laminar armour usually were worn with a high collar (protecting neck and head) integral with one or two laminar pauldrons (used rather as shield than ordinary pauldron). This collar and its pauldrons usually were made from leather and wood. Usually at least one part of an armour (a pauldron) was laminar, but sometimes a pauldron was
Body worn video victims or suspects. A 2017 study from Washington, D.C. including a large number of law enforcement officers showed no effect of body cameras on documented uses of force and civilian complaints, or on a variety of additional policing activities and judicial outcomes. The authors suggest 'we should recalibrate our expectations' of body-worn cameras: "they may have great utility in specific policing scenarios, but we cannot conclude from this experiment that they can be expected to produce large, department-wide improvements in outcomes". In reviewing the existing research on police body-worn cameras in 2017, University of Virginia economist Jennifer Doleac noted that