Upgrading the seismic bracing of existing systems and equipment is a consequential chore in the upgrade of any critical existing facility. The work is complex and detail-oriented as omission or failure of any single brace or anchor could result in disruption to post-earthquake facility operations. This is especially true when the building must remain operational while the seismic upgrade is performed. Our approach is to reasonably minimize the bracing that must be performed, while ensuring that every critical system is protected.