Terry Gross

He responds to concerns about conflict of interest in awarding military contracts to private companies. Pawlik explains how the Army Corps of Engineers gave contracts to put out oil fires in Iraq to Kellogg Brown and Root (KBR), a subsidiary of Halliburton. Vice President Dick Cheney, a former Secretary of Defense, was the CEO of Halliburton before he became vice president.

He's the founder and executive director of the Center for Public Integrity. It's a nonprofit, nonpartisan research organization in Washington, D.C., similar to an investigative journalism outfit but without time and space constraints. Its mission is to expose corruption and power abuse by governments, corporations and individuals. For 11 years, Lewis was an investigative reporter at ABC News, and also worked at CBS on 60 Minutes. His work at the Center for Public Integrity has been widely praised.

He was the Weekend Update anchor on Saturday Night Live from 1998 to 2000, and was known for his satirical coverage of the Clinton-Lewinsky scandal. He's now starring in Comedy Central's Tough Crowd with Colin Quinn.