They cannot remove the foreboding feeling that something would happen that could be out of their control. It did make sense for them at all.
'Stay alert. Block all entrance and exit.' Cole sent a message to his army leader, who has all his men surround the inside and outside of the building. He did it to assure himself that their two guests would not have any other choice but to do what they want.
Mo Lihua and Piore were the only people that arrived, and it was not necessary to mobilize his private army. They even own the building that they were currently.
However, if they need to use physical assault, at least they had people ready to do so. 'Well, we could also dirty our own hands if needed.'
Even though Marco did not mention anything regarding the possibility of capturing when the talk did not go as planned, Cole still prepared for other options, and he was thankful that he did.