[Once Casey was making his way up the fire escape, the Batman climbed onto the railing of the fire escape and up onto the roof of the building. The roof was flat, but for the various vents and air conditioners, and it didn't take long for him to sprint across and reach the opposite end of the building.]
[The buildings were close enough together that he didn't need a grappling hook to jump onto the next one.]
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[Once Casey was making his way up the fire escape, the Batman climbed onto the railing of the fire escape and up onto the roof of the building. The roof was flat, but for the various vents and air conditioners, and it didn't take long for him to sprint across and reach the opposite end of the building.]
[The buildings were close enough together that he didn't need a grappling hook to jump onto the next one.]