Imagine a well-dressed Marine coming up the walk to knock on the door of a house, the bearer of bad news. Imagine that happening once per second. It would take over a half an hour.
Imagine giving each dead soldier a minute of silence. After you'd spent an entire day, you'd have over 9 hours left to go.
Imagine spending a day remembering the sacrifice of each dead soldier. You'd be finished on July 21. 2008.