LINCOLN, Neb. (AP) — The Double R Horse Rescue looks different in drought: There's little but stubble in the pastures and a chain and padlock on the gate. The owner began locking up the property last month in an effort to keep people from driving up at night and dropping off horses they can no longer afford to feed. Horse rescue groups nationwide have been struggling to care for a growing number of animals abandoned since the Great Recession hit more than four years ago, but leaders say their work has become even more difficult and expensive this summer as drought and wildfires burned up pastures and sent hay prices skyrocketing.