Group 1 - A military explosives factory in Humphreys County, Tennessee, experienced a significant explosion and fire, resulting in 19 individuals reported missing, likely deceased [1][2] - The explosion occurred around 7:45 AM, with the factory located approximately 100 kilometers southwest of Nashville [1] - The factory is owned by "American Precision Energy Systems," established in 1980, specializing in the production of high explosives and specialty products for the U.S. Department of Defense and the industrial market [2] Group 2 - The explosion was described as "very destructive," completely leveling a building and causing vibrations felt up to 20 kilometers away [2] - Rescue operations were hindered due to concerns about potential secondary explosions, leading authorities to restrict access to the site [2] - The cause of the explosion is currently unknown, with investigations being conducted by the Bureau of Alcohol, Tobacco, Firearms and Explosives, and the Department of Defense has acknowledged the incident [2]

Group 1 - An explosion occurred at a military explosives factory in Humphreys County, Tennessee, on October 10, resulting in 19 people reported missing, likely deceased [1][2] - The factory is owned by "American Precision Energy Systems," established in 1980, which manufactures various high explosives and specialty products for the U.S. Department of Defense and the industrial market [2] - The Bureau of Alcohol, Tobacco, Firearms and Explosives has joined the investigation, and the Department of Defense is aware of the incident and will conduct an investigation [2]