Trowa didn't bother to ask whether or not this was it, as it matched the description and distance away that Jiraiya had earlier dictated. It didn't seem like anyone was outside, anyway.
That in mind, he opened the cockpit again after mentally checking to be damned sure he was armed and had extra ammunition (then again, when he was fifteen, had he ever NOT had at least two weapons on him?).
Jiraiya could get out first. The zipline was right there, after all, and he knew where it was from when he had climbed up it.