Abstract: Expandable shelters having a heating, ventilation, and air conditioning (HVAC) system arranged to receive outside air away from a mechanical compartment are disclosed. The expandable shelters may comprise an air inlet vent disposed in a front of the expandable shelter interconnected to an in-floor air duct arranged to draw outside air below an interior floor and exchange heat with the coolest area of the expandable shelter. By virtue of having an air inlet vent receive outside air from a location substantially away from the mechanical compartment and exchange heat with the coolest area of the expandable shelter, an environmental control unit (ECU), housed in the mechanical compartment, receives relatively cool outside air, keeping air temperatures inside the mechanical compartment below the upper operating limit of the ECU.

Abstract: A fluid controlled containment berm system for automatically forming a containment berm to contain hazardous liquid spills. The fluid controlled containment berm system includes a liner including a floor and a sidewall, a buoyant member attached to an upper portion of the liner, and a pair of diffuser members attached between the floor and the sidewall.

Abstract: A fluid controlled containment berm system for automatically forming a containment berm to contain hazardous liquid spills involving a vehicle. The fluid controlled containment berm system includes a liner including a floor and a sidewall, a buoyant member attached to an upper portion of the liner, and a pair of diffuser members attached between the floor and the sidewall.

Abstract: Containment berms and associated support systems and structures. In one example embodiment, a containment berm bracket includes a substantially rigid first member and a substantially rigid second member. The first member defines a first complementary structure. The second member that defines a second complementary structure and a sidewall clamp. The second complementary structure is configured to releasably engage with the first complementary structure in order that the members can be releasably attached to each other.

Abstract: Containment berms and associated support systems and structures. In one example embodiment, a containment berm bracket includes a substantially rigid first member and a substantially rigid second member. The first member defines a first complementary structure. The second member that defines a second complementary structure and a sidewall clamp. The second complementary structure is configured to releasably engage with the first complementary structure in order that the members can be releasably attached to each other.