Update README.md to include SBOM excerpt

README.md

@@ -146,8 +146,16 @@ the American public, but you are also welcome to submit anonymously.
 
 For more information about our Security, Vulnerability, and Responsible Disclosure Policies, see [SECURITY.md](SECURITY.md).
 
+### Software Bill of Materials (SBOM)
+
+A Software Bill of Materials (SBOM) is a formal record containing the details and supply chain relationships of various components used in building software.
+
+In the spirit of [Executive Order 14028 - Improving the Nation’s Cyber Security](https://www.gsa.gov/technology/it-contract-vehicles-and-purchasing-programs/information-technology-category/it-security/executive-order-14028), a SBOM for this repository is provided here: https://github.com/DSACMS/metrics/network/dependencies.
+
+For more information and resources about SBOMs, visit: https://www.cisa.gov/sbom.
+
 ## Public domain
 
 This project is in the public domain within the United States, and copyright and related rights in the work worldwide are waived through the [CC0 1.0 Universal public domain dedication](https://creativecommons.org/publicdomain/zero/1.0/) as indicated in [LICENSE](LICENSE).
 
-All contributions to this project will be released under the CC0 dedication. By submitting a pull request or issue, you are agreeing to comply with this waiver of copyright interest.
+All contributions to this project will be released under the CC0 dedication. By submitting a pull request or issue, you are agreeing to comply with this waiver of copyright interest.