Any race managed by a military branch is guaranteed to be incredibly organized and the Army Ten Miler is no exception. This ten miler is huge, and yet they manage to get all of the racers across the start line in a clear and efficient manner.
The 2017 race was unusual in that the DC area was experiencing extreme heat, and to get people off the course faster, around a mile was cut off for runners in the later waves. I was not affected by this, but was surprised to learn the race had been altered when I reached the finish, as there was no discussion of a change for safety while out on the course. That said, the aid stations were amazing and soldiers were throwing water at people who wanted it. They did everything they could to keep us safe, which is the ultimate goal.