2 kittens needing transport from shelter to rescue

My rescue is taking in 2 semi-feral kittens from a shelter in San Mateo. They need to be transported to Montana. They are scared, so the shelter will load them together in a kennel with box, food and water. Transporter should not need to do anything but ensure their water is refreshed as needed. They may bolt if the kennel is opened, so caution should be exercised.