At a time when the fiscal future for defense spending is unclear, those who are good at divining a picture of what’s to come are in demand. Harrison is sought by Congress, government, industry and the press. A former Air Force officer, he doesn’t pull any punches in his analysis, spearheading budget cutting drills and collaborative efforts among Washington’s largest think tanks generating strategic, thought-provoking analysis. Harrison joined CSBA after his predecessor Kosiak (No. 15) joined the Obama administration to oversee the defense account at the all-powerful Office of Management and Budget. At CSBA, he continues the annual ritual of briefing reporters on the administration’s upcoming budget submission — a week before it happens. And so far, his track record of getting it right is about as good as it gets.