ROSEBURG, Ore. — The gunman had already shot several students at close range when he stood inches from Lacey Scroggins and demanded she stand up. It was only the fourth day of community college for the 18-year-old aspiring surgeon, and she was facing a test no education could prepare her for as she lay face down, her head tucked between her outstretched arms among dead and dying classmates. Scroggins could hear someone gurgling and she felt the weight of fellow student Treven Anspach, 20, pressed against her body as his blood flowed into her clothing.