HAPPENING NOW: Tactical units are on scene after reports of a disgruntled employee armed with a gun inside the SubTropolis underground caves in Kansas City, Missouri; According to their website, the facility is the ‘World’s Largest Underground Business Complex’ - KCTV
11:46 AM EST - 25 Jun 2019
https://twitter.com/Breaking911/status/1143546026189606912
SubTropolis is a 55,000,000-square-foot (5,100,000 m2), 1,100-acre (4.5 km2) artificial cave in the bluffs above the Missouri River in Kansas City, Missouri, United States, that is claimed to be the world's largest underground storage facility. Developed by late Kansas City Chiefs owner Lamar Hunt via Hunt Midwest Real Estate Development, Inc., it has trademarked the phrase World's Largest Underground Business Complex.
https://en.m.wikipedia.org/wiki/SubTropolis