区是一个解开纠结钻,秘密地下降ely replicates a firefighter becoming entangled in the grid and wires of a drop ceiling. In addition to providing challenging entanglement conditions, this drill is simple and inexpensive to conduct. These benefits are noteworthy in that the prop can be reused several times, yet it is also expendable. Participants are "encouraged" to use any and all means necessary to free themselves and their crew from the entanglement. The crew members' efforts to cut and remove sections of the entanglement during the drill create a multitude of different entanglement possibilities each time the prop is used. This prevents the participants from becoming "used to" the prop and simply going through the motions in successive drills.
下降区道具是一卷塑料围栏。围栏是展开的，并在房间的周围或有足够的空间周围进行了上演，以使船员被围栏笼罩。戴着口罩被遮挡，参与者被带到了位置，围栏被覆盖在他们身上（照片4）。由于很少的讲师操纵，围栏似乎会在Primepant头盔，SCBA和交场装备上寻找并抓住任何障碍点。最初，消防员将通过个人努力清理纠缠而无意中纠缠其他机组人员。团队合作和沟通变得至关重要，并且随着参与者认识，解决和克服障碍而得到加强。在泳池训练课程中，该演习也适用于水肺纠缠。
