The company uses a system used for creating barriers in military zones and as an alternative to sand-bags in flood zones. They have several units in Haiti as temp shelters. Four building kits fit in a 20' container

Deployment in Haiti

Specs for T-Shelters:R - HOUSE™

Large blocks:
YouTube - HESCO RAID 7 Concertainer -British Army Demo

Flood wall:
YouTube - HESCO: Fast & Furious Flood-Fighting in Fargo

The system comes out of a standard container to create 8'x8' open boxes: