The complexity of disaster management is rising because of rapidly advancing technological changes and the challenges associated with coordinating responses among multi-organizational contexts. One of the common problems with multi-organizational disaster management is the need for an interoperability language. Therefore, by maintaining effective communication, risk can be reduced, and lives can be saved in times of crisis. The United States SCIPs represent one of the solutions used to achieve a culture of better interoperability. In 2019, The National Council of Statewide Interoperability Coordinators (NCSWIC) and CISA collaborated to create a tool that identified 25 Interoperability Markers. This tool is integrated with SCIPs to increase interoperability and serves as a national framework to describe interoperability maturity at the state levels.

This is a descriptive study documenting each state's 25 interoperability markers and analyzing common gaps and successes. Two methods were used for collecting data. First, an online search for each state's SCIP. Then, an email was sent to all state's Statewide Interoperability Coordinators (SWIC) to request the most recent update of that state’s SCIP. Data were collected from October 1-31, 2022 and exported into an Excel spreadsheet (Microsoft Corp; Redmond, Washington, USA) for descriptive statistics and analysis.

The level of interoperability maturity across the United States is 66%. The governance level in the interoperability continuum scored the highest across states with 76.4%. While the other levels of the interoperability continuum like technology, training and exercise, and interstate emergency communication scored 63.5%, 64%, and 60% respectively.

This study identifies a high level of interoperability maturity across the United States at the governance level. It is essential to continue to improve interstate interoperability through compatible technological solutions and multi-agency training. Finally, further research on interoperability markers is needed to enhance multi-agency emergency response.