Reynolds, 36, is an experienced political operative who has picked up some energy and environment policy chops along the way. He joined EPA in May after spending the past year on the campaign trail as the director of regional media for Obama's reelection team. He'll need plenty of campaign savvy for his new job, where he will have his work cut out for him: Over the next two years, as the agency rolls out historic climate-change regulations, EPA will continue to face near-daily congressional attacks, as Republicans slam the rules as the ultimate "war on coal." Reynolds sees the challenges EPA faces as an opportunity. "When the president laid out his vision to address climate change, EPA was front and center, and it's going to be an honor to be part of that effort," he says. Before working on the Obama campaign, Reynolds spent three years in the press shop at the Energy Department. He also worked on Obama's 2008 campaign. Before that, he was with then-Rep. Jane Harman, D-Calif., and Sen. Tom Harkin, D-Iowa. Reynolds is originally from Philadelphia and earned a B.S. in journalism at Boston University.