People sign the Northgate Link light rail tunnel boring machine during its dedication Monday afternoon, April 28, 2014, in Seattle. The machine will be used to drill the southbound tunnel from the Northgate portal to Husky Stadium this summer. This portal is just east of Interstate 5 near the Northgate Mall shopping center. (AP Photo/The Seattle Times, Mike Siegel) SEATTLE OUT, USA TODAY OUT, MAGS OUT TV OUT NO SALES MANDATORY CREDIT TO: MIKE SIEGEL / THE SEATTLE TIMES.