As L.A. ports automate, some workers are cheering on the robots

Day after day, Walter Diaz, an immigrant truck driver from El Salvador, steers his 18-wheeler toward the giant ports of Los Angeles and Long Beach. Will it take him a half hour to pick up his cargo? Or will it be as long as seven hours? Diaz is paid by the load, so he applauds the arrival of more waterfront robots, which promise to speed turnaround times at a port complex that handles about a third of the nation's imported goods. "I'm for automation," Diaz says.