At least the way up isn't difficult, but the pipes dip down and bend to flank the walkway almost immediately. Condensation drips from the first connector, and Donnie eyes it warily as he passes, scanning the metal in front of him.

He hears it a split second before the steam spews from the section just before him, jerking back as a jet of steam spews from the next connector.

"-ohhh this is not going to be fun," he mutters, still feeling the warmth even when standing a good foot from it. But at least it doesn't last for long, and eyeing the way ahead, Donnie glances over his shoulder to nod at Akechi before he moves forward again. It seems more obvious, hopefully, where the leaks might come from, and the next connector's still some way's down the catwalk.