Around 6 p.m., officials with the Chicago police and fire departments as well as the Chicago Transit Authority responded to the Howard CTA station, located at 1523 West Jarvis Ave. in the city's Roger's Park neighborhood, video showed. Aerial video captured by NBC Chicago Sky 5 showed dozens of officials on the tracks surrounding a train that appeared to be partially derailed. #cta #yellowline #derailment #trainderailment