The Doctor more than appreciated the 'we', and he beamed just as widely back at Wilf. It seemed Donna's family was just as brilliant as she was. Well, Wilf. He wasn't too sure about Sylvia, yet.

He handed over the crystals and fished out his sonic, which he pointed directly into the heart of his device.

"I can reroute the subtrecarian systems and I should be able to isolate the signal."