text:  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, Delaware, whizzed back and forth on golf carts to join Joe Biden in strategy sessions. The work days vary in length or not. Well, hopefully they're a little longer than his normal days because he puts a lid on things at around 9 in the morning.