Omni-Threat Structures (OTS) has successfully developed a proprietary hybrid construction process of shotcrete panels and tilt wall erection sequencing for multi-threat hardened structures offering protection from: HEMP – High Altitude Electromagnetic Pulse IEMI – Intentional Electromagnetic Interference Emanations Eavesdropping (TEMPEST) Ballistic – Blast Event Driven Missiles Seismic Extreme Weather Protection from Electromagnetic threats can now be incorporated with the proprietary/patented materials and construction methods derived from five years of a joint R&D program with OTS construction engineers/experienced experts and a Sponsored Research Agreement with the former University of Nebraska DTRA-STRATCOM R&D team. The OTS Electromagnetic Shielding System (EMSS) is designed to provide threat configurable, scalable, energy efficient and cost-effective hardened structures for critical infrastructure and other vulnerable industries.