Inside Biden’s Camp David Debate Prep

At Camp David, a movie theater and an airplane hangar have been outfitted with lights and production equipment to create a mock debate stage. At least 16 current and former aides, summoned from Washington and Wilmington, whiz back and forth on golf carts to join President Biden in strategy sessions.Mr. Biden is entering his fifth day of preparations at the presidential retreat in the woods of northern Maryland for Thursday’s debate against Donald J. Trump. Camp David has become the epicenter for an administration and campaign effort to help Mr. Biden shake off the rust that often comes…