Josh travels back to the White House in the motorcade with everyone else, but in the previous episode he talked about driving himself to Camp David.
Donna had thoracic/pulmonary surgery plus a multiple compound fractured thigh bone and would not possibly be able to return to work, let alone be pain-free. At minimum her leg would likely have needed to be in traction for weeks to ensure the bone set properly.
Leo's eyes would have been taped shut while undergoing surgery under general anaesthetic, and his endotracheal (breathing) tube would have been secured to his face with a device or at least a length of gauze.
CJ says that England has pledged troops for peace-keeping in the Middle East. She should have said 'the United Kingdom'. This is a very common error but CJ, working in a political environment, should have known better.