CNAS, the little think thank that could, is starting up season II of its terrific program called "Next Generation National Security Leaders." Those selected get to chow down with Washington bigwigs, ask insightful questions, and rub shoulders with like-minded overachievers.
The downside is that you have to apply like right now. All the info is here.
Thomas E. Ricks covered the U.S. military for the Washington Post from 2000 through 2008.