Mystery 'Boom' Heard Across DC Area, No Threat Detected.
TL;DR
A loud boom heard across the DC area on Sunday was caused by an authorized DOD flight that resulted in a sonic boom. The Department of Homeland Security confirmed that there was no threat. Some viewers reported that the boom shook residences, but there were no ongoing incidents reported by local emergency response agencies. The source of the military flight and whether it caused any damage is still being investigated.
- Sonic Boom Heard Across DC Area; Homeland Security Says There Is ‘No Threat' NBC4 Washington
- Large explosion noise heard across DC, Maryland and Virginia; possible sonic boom FOX 5 DC
- Officials: ‘Loud boom’ heard in DC region caused by military flight WTOP
- 'Boom' heard across Maryland caused by authorized flight WBAL TV Baltimore
- Washington ‘explosion’ today: Mystery ‘loud boom’ heard in Annapolis as Twitter compares it to earthquake The Independent
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