The Nevada Highway Patrol put up its first “DUI Tree” years ago. You can find it at NHP’s Reno headquarters, 357 Hammill Lane. How it works is that officers hang a paper ornament on the tree for every DUI arrest they make between Thanksgiving and Christmas. The tree doesn’t celebrate arrests. It’s meant to serve as a reminder of each crash and fatality that may have been avoided when a drunken driver was removed the road.