An armed assailant wounded several people at the Naval Sea Systems Command Headquarters building at the Washington Navy Yard on Monday morning.
Anyone who follows the U.S. Navy on Twitter
knew about the incident while the shooter was in the building because the Navy tweeted about it in real time.
The first tweet came at about 8:40 a.m. EDT, about 20 minutes after the shooter was first reported as being inside the building:
A few minutes later, the Navy’s Twitter account confirmed that three shots had been fired:
The next tweet:
The Navy repeated that tweet about 20 minutes later to confirm that the shooter was still active.
By about 9 a.m. EDT, the Navy’s Twitter account was pointing followers to a full statement
about the shooter, which said employees were under a “shelter in place” order, which essentially is an order to hide in a small room, and that there was one confirmed injury. News organizations reported multiple injuries, but the Navy confirmed only one as of about 9:20 a.m. EDT, later updating that to “several” injuries.
At about 2:30 p.m. EDT, the Navy tweeted
that the Washington DC Police Department confirmed 12 people died in the shootings.
The Navy’s official hashtag for the incident, #NavyYardShooting, became the hashtag Twitter users quickly adopted to talk about what was happening. News organizations and personalities were using the hashtag to offer information about road closings:
Others offered support to the wounded.