Three Dallas firefighters are in critical condition and 4 others were injured in explosion at southeast Oak Cliff apartments, Wednesday, September 29, 2021. A natural-gas explosion tore apart an apartment building after firefighters arrived on scene to investigate the smell of natural gas. (DMN video/editing: Tom Fox) Subscribe to The Dallas Morning News: https://www.dallasnews.com/subscribe/main/ Site: http://dallasnews.com Twitter: http://twitter.com/dallasnews Instagram: http://instagram.com/dallasnews TikTok: https://www.tiktok.com/@dallasmorningnews