Hollice Stone, P.E. 
Managing Principal and President

Stone Security Engineering was founded by Hollice Stone. She is a leader in the security engineering industry with 30 years experience in engineering, blast, antiterrorism and emergency response.

Hollice has devoted her career to helping protect people, buildings and critical infrastructure from terrorism. Instrumental in criteria development, research, and educational initiatives, she is a creative and innovative force in the security engineering field, using her management, engineering, and emergency responder experience to proactively identify industry challenges and develop practical solutions.

Her portfolio of work includes multi-hazard vulnerability assessments and new antiterrorism design for the U.S. Departments of State, Justice, Defense, and Homeland Security, as well as national universities, chemical plants, oil refineries, Fortune 50 companies, and international NGOs.

Arturo Montalva. P.E., P. Eng.
Principal and Vice President
Director of Engineering

A specialist in the mitigation of seismic, blast, and progressive collapse hazards, Arturo Montalva has over 20 years of professional experience in the engineering industry. He utilizes his in-depth expertise in linear and non-linear structural dynamics and finite element analysis, as well as advanced techniques for the risk assessment of facilities against man-made threats.

Arturo’s career is marked by significant contributions, including his involvement in the design and assessment of buildings for the Local, State, and Federal government, protection of personnel, facilities, and operations in high-threat environments, historic building renovations, the development of mandated federal design criteria, and multitude military facilities within the US and worldwide. These projects stand as a testament to his exceptional capabilities and impact in his field.

Arturo has demonstrated his innovative approach by utilizing his knowledge of numerical methods to develop cutting-edge in-house analytical tools. These tools not only better support our clients’ needs but also position our firm at the forefront of the industry, under Arturo’s visionary leadership.

Richard Galli, P.E.
Associate Principal | Project Manager, Senior Safety and Security Engineer

Richard Galli brings an impressive breadth of experience in the fields of security and safety design to the firm. His projects have included detailed design and analysis of doors, windows, and curtainwalls, test program development, authoring of Government guidelines, and accident investigations at industrial facilities.

Rich has also been involved with more traditional work, participating in more than 100 successfully completed projects related to blast, progressive collapse, and fragment evaluation and mitigation for government and industrial sector clients. The scope of these new construction or retrofit design projects has ranged from feasibility studies and conceptual designs to detailed design and construction administration support.