UFO conference under way this weekend

Saturday, August 14, 2010 | 7:17 p.m. CDT; updated 9:44 p.m. CDT, Saturday, August 14, 2010

COLUMBIA — Daniel Mitchell said he was outside Porterville, Calif., in 2002 when he saw it: a boomerang-shaped UFO longer than three football fields, gliding silently just over the treetops. He said he felt like he'd been kicked in the gut.