She grabbed hold of his chair and moved forward, slow at first as she scanned the lines of beds, then she picked up speed and ran to the far doors. She swung through them, following her phone’s directions, and took the next right. A large red plastic sign reading under construction hung over the door. She ducked under it and pushed her way through. What looked like patient recovery rooms were being gutted and replaced. Two gleaming rows of new full-body scanners faced each other across a central aisle strewn with half-hidden power cables.