Senator Dick Durbin, an Illinois Democrat, was sharply critical of the for-profit sector during a hearing Wednesday  of the Senate Appropriations Subcommittee on Defense. The hearing was on the U.S. Department of Defense's tuition assistance program for members of the U.S. military. Durbin, who has tangled with for-profits before, grilled  Frederick Vollrath, the assistant secretary of defense for readiness and force management, over the Pentagon's oversight of the program. For-profits received half of the $660 million the federal government spent on military tuition assistance last year. Yet Durbin said only 200 department counselors are on hand to help the 200,000 military students who receive tuition assistance. And he said the department audits only 1 percent of participating colleges each year.