Harry and Seamus got a bunch of stuff together, grabbing the invisibility cloak and numerous magic items to help aid their mission. This would be very dangerous, they both knew how lethal this whole operation was now that it turned into a full out WAR once again because of Voldemort. He may be dead, but he was still causing such death and destruction because of his followers, mainly Lucius and Fenrir were the brunt of the muscle and power, but they were fierce...and that worried Harry down to his bones.