[Once Jason feels ready, he leaves through a window again. Eventually he's back on his motorcycle and starts heading to the seemingly vacant building. Dana can hear enough noise through her earpiece to know Jason means it when he says the comms are staying open.

Soon enough, he parks his motorcycle and uses his grapple gun and parkour skills to finish the rest of the route to the building]

So far, nothing weird. It really looks like just an empty building.