It proves difficult for Kaine and Sleeper to really get a good line of sight into the construction area. The buildings on either side aren't really that high, and there's quite a bit of open air between them and the beginnings of the structure being raised on-site. Getting over there would surely mean risking detection.

Kaine can hear someone speaking - it sounds like Doctor Octopus - but he can't quite make out the words from here. Likewise, he can see roughly where the villains appear to be clustered, but between the darkness, the distance, and the clutter of the construction site, he can't count them, or make out exactly who they are.

Spoiler: OOC
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I can answer a little bit more, but otherwise, I'm reluctant to go into much more detail until you commit to an approach enough to define your asset.