"Hello Jake," the Doctor said as he heard the careful footfalls. He needed to talk to Jake properly, to let him know that the others would be here and why.
He pressed the button on the Sonic, using the frequency that had seemed to hold the affects off Jake for the longest. "Can you hear me properly?" he asked before speaking again. "Neytiri, Harry and my other self are on their way here. I wanted to let you know before they arrived so that you were prepared for it.
"We need to stop this and I'm pretty sure I can rig something up with the parts I brought with me, so that the 'fog' will stay away from a specific room," he explained, speaking fast to get the words out while Jake could hear. At least he hoped he could.