A downhole device with compressive layer at the surface thereof. A video coverage area for each camera in the system is calculated by combining sensory information and optical specifications of each corresponding camera. An igniter assembly is positioned in a bore in an upper piece of the inflator body and is held in place with a press-fit interface and an adhesive seal. , a socket wrench, torque wrench, drill driver, or other tool, which may impart a rotational force on the shaft to radially expand a head of the apparatus and secure it within a tailpipe of a vehicle, such that buildup of pressure within the vehicle exhaust system does not expel the apparatus from the pipe. The acceleration of the dummy load is measured and adjustments are made to update the drive signals if the TRS is not within acceptable tolerances of the RRS.