We've got four open trouble tickets on the Hawk Sub this morning and need to get hi-rails out to each one. For each ticket, find the best place to set on near the trouble location, searching outward along the line in both directions from the crossing inventory, our set-on pad list, the industry track list and the sidings on the track chart. Check each location against our set-on instructions, and rank them by how long it actually takes to get to the trouble, not just by distance.