An airbag cushion for installation in a negative pressure vehicle having a partition extending vertically along B-pillar trim covering a B-pillar, may include a cushion body mounted on a vehicle body in a folded state on an upper portion of the B-pillar, inflated by gas, and deployed between the B-pillar trim and the partition, and a tether connecting one side of the cushion body to the vehicle body to allow the cushion body to maintain its deployed shape.

A liner for installation in an interior space of an emergency vehicle to prevent surface contamination. The liner is secured with a system of grommets and clips, allowing the liner to be easily installed when needed and removed after use. The liner is designed to be easily installable and disposable, while enabling medical staff to operate within the emergency vehicle essentially unhindered by its presence. In some embodiments, the liner is stored in a container under put into use and then disposed of in that same container.