just to throw a minor kink in, there is some difference of interpretation of what constitutes “day 1”. In the past in most areas, if you got to an incident during the day and were assigned to go right to work, that was day 1. At least some GACCs now are interpreting that if you did ANY travel that day, it’s still a travel day. So if you drove 2 hours, got to the fire and worked the whole shift, it’s still a travel day, so day 1 is the first day with zero travel. But all the above information is correct, LWD is for planning purposes, so Ops, plans, DIVS, etc, can see when they have a resource timing out, and plan to replace them in time if they’ll still be needed.