The Baltimore one wasn’t really national news worthy. It seems like a pretty clear cut case of a construction accident. Crews were working on the boiler and HVAC at the time and no one is thinking terrorism.
Nashville on the other hand was clearly intentional which made it national news.
Surprised it didn’t make the news more since the amount of people that got injured. However, I know they aren’t remotely the same situation now but at the time, it was definitely an eyebrow raiser before the facts came out.