What happens is that, especially if a veteran has been out two or three years, they have to determine if the particular injury that is being claimed is attributable to the service. The person might have been released medically for illness or whatever, yet the injury that they're claiming may not be what led to their release. That's why the process is in place right now. Is it necessary? Personally, right now, based on the way the system is designed to provide benefits for both injuries attributable to service or not, I think it's a moot point.
On November 2nd, 2017. See this statement in context.