UNKNOWN
No, I'm not trying to suggest how you should conduct your struggle.  You said that you identified the risk in the sense that there were security people that were armed, I'm trying to find out whether you as the commander in giving instructions to your unit that they should overcome that risk or that danger to your mission.  In other words, take the security guards out and there would be not further problem in obtaining the money?  Did you contemplate that - if you did contemplate that did you convey that to your unit?