Developing story. Could be unrelated but worth looking into because of the close proximity to D.C. And the unknown cause for the "explosion."

https://www.google.com/amp/baltimore.cbslocal.com/2017/03/17/fire-officials-investigating-house-explosion-in-rockville/amp/ http://archive.is/J9CFl

Strangely enough there was another home "explosion" on this same street in this same area in 2011.

https://www.google.com/amp/www.nbcwashington.com/news/local/Mont-Co-Couple-Blown-From-Home-in-Explosion-121237889.html%3Famp%3Dy http://archive.is/5qih6