The Coast Guard has announced in the Federal Register the availability of Change 1 to Guidelines for Qualification for STCW Endorsements for Vessel Security Officers, Vessel Personnel with Designated Security Duties, and Security Awareness, NVIC 21-14.
Source: Federal Register Notices
Link: Federal Register Notice: Change 1 to NVIC 21-14 guidelines for qualification for STCW endorsement for vessel security officers