Woman crossing the road at 03:30-ish was hit and killed according to Wash Post.
Why she was crossing at 03:30 and why she didn't see the one car on the road at that time of the morning is an interesting couple questions...
Link below copy-n-pasted and may be broken:
http://www.washingtonpost.com/blogs/crime-scene/post/woman-struck-killed-on-route-28-in-loudoun/2012/12/16/5cf19d76-479f-11e2-b6f0-e851e741d196_blog.html?wprss=rss_local