Just beyond the edges of the Hellsing wards, Sebastian can be found beside a horse and cart, checking both over to make sure they're up to whatever task comes their way. He knows the harness and tackle are in good condition and while he's generally unfamiliar with horsemanship, the basics shouldn't be too different from thestrals, right?

In any event, after he's sent out his coordinates Deucalion will probably find him checking to make sure the cart itself is sturdy and able to travel well over what might become rough road.