The Doctor pulls Jack closer. "All I need you to do is be an open conduit, ground me...can you do that?" He places Jack's hands on Jenny's temples and his own on Jacks. "Doctor Harper, if you could be so kind as to push that button there, and then just...well...try to stop anyone from dying." He looks into Jack's eyes, searching. "Thank you. Ready?" He closes his eyes, waiting for the amplifier to help him, waiting to feel the connection.