Mark began to noncomittedly, idly sweep his energy beam back and forth across the rubble heap, but as soon as Cathy and Sam were out of sight, he stopped and went to seat himself on a nearby pillar or pile of dirt - he hadn't been assigned to this for manual labor duty. Judging by the size of the machine, there wouldn't be enough air to support three people - well, two, he wasn't sure entirely what the elf had turned into - for the time it'd take him to burrow a tunnel down to them...and considering one of them was the Brelander, he certainly wasn't going to expend any more effort than he absolutely had to.