House Speaker Gaye Symington ended speculation and announced her campaign for governor; Middlebury police continue to search the Otter Creek for signs of Nick Garza, a Middlebury College student who has been missing for three months; the Simon Pearce glassmaking company has laid off 26 people, most of them in its Windsor and Quechee operations; state transportation officials say delays have begun on Interstate 89 north between Richmond and Williston.