Found this info from twitter user FLYNNL1VE5.

Check out this article from a blog site for the neighborhood Seth lived in. http://archive.is/PTJBH

The article mentions Aaron Rich went to speak with the EMT's and Fire Fighters who tried to save Seth's life.

Here are a couple pics of Aaron Rich with the EMTs/FFs.

https://pbs.twimg.com/media/DDczdqCUAAAKKnS.jpg:large

https://4.bp.blogspot.com/-dB0fQ3LpXsk/V9DMoWfm_sI/AAAAAAAAkhU/jv-cVSH4bUMQGJdCvsj0-LcqSjS2VhK2ACLcB/s1600/Seth%2BRich%2BAaron%2BRich%2Bwith%2BFEMS%2B2016%2B09.JPG

Conveniently for us, DC FIRE & EMS confirmed this event through their FB and even listed all the names of the first responders who attended to Seth after he was shot. http://archive.is/alyav

" Visiting the quarters of Engine 6, located at 1300 New Jersey Avenue Northwest, Aaron Rich expressed his gratitude to all present, and then joined the firefighters for dinner.

Those involved in treating the mortally wounded man were Firefighter/Intermediate Paramedic Kila A.Brown, Firefighter/EMT William T. Shepard, Firefighter/Technician James A. Hyde, Firefighter/EMT Isaiah C. Badgett, Firefighter/EMT Anthony Thomas and Captain Dennis O. Gobantes.

All the personnel involved were assigned to Engine Company 6 and Medic 17 the morning of the shooting."

I quickly googled the info of each of the mentioned individuals, but oddly couldn't find much on anyone. I'll do some digging later and make any updates, but thought I'd share this with you guys to see if it helps someone else in their research.