OMAHA, Neb. — Physician LeRoy Carhart wants to continue providing third-term abortions after the brazen slaying of his friend and colleague George Tiller, but the Nebraska doctor doesn't have anywhere to perform them — and he's one of only a handful of providers who will. Tiller's Wichita, Kan., clinic was shuttered Sunday after the 67-year-old physician was gunned down at his church. His family said Tuesday that they were unsure when it would reopen, posing a problem for Carhart, who wants to carry on his friend's mission.