"Could be either - lines might be run mostly underground."

As they go along, Charlie makes an absent attempt at flipping the collar of his pullover sweater up round his neck, zipping it to the top in a lame attempt to keep some heat in. He works his hands in and out of fists, brings his hands up to huff a hot breath of air across his knuckles; the sooner they can get indoors and out of this weather, they better - not that some warehouse storage is likely to be much warmer mind.