We are a little late on this one, but I think you will find the video worth the wait. This is 11 minutes of raw video from a United States Park Police helicopter taken during the early stages of a rowhouse fire that began at 921 Decatur Street, Northwest on the afternoon of July 1. The fire went to two alarms. Two firefighters were treated for heat exhaustion.
The picture below is one of a series of photos from Elliot Goodman, who was also an early arrival (he was four blocks away). The rest of Elliot's pictures can be seen at DCFD.com.