TV Tech: NVISA’s New VIDS Practice Makes Emergency Alerts Visually Easy to Grasp
https://www.tvtechnology.com/news/nvisas-new-vids-practice-makes-emergency-alerts-visually-easy-to-grasp
https://www.tvtechnology.com/news/nvisas-new-vids-practice-makes-emergency-alerts-visually-easy-to-grasp
https://www.rbr.com/a-nextgen-tv-advanced-emergency-info-services-webinar-is-coming/
https://www.tvtechnology.com/news/nextgen-tv-survey-details-what-consumers-want-in-emergency-information
The latest edition of IEEE's Broadcast Technology provides a great overview of NVISA, our objectives, and initiatives. You can read it here, starting at page 30.