I couldn't find the exact interview, but I distinctly remember Wynn saying they have devices that can detect guns in bags and on persons.
I found an interview where he just mentions "devices" amongst other extreme security measures.
- "Devices" at every entrance that the public can't see
- 40 Plain clothed, armed, former Marines trained specifically for guarding US embassy's at each entrance.
- Seal team and CIA agents that form private counter terrorism that have direct communication with FBI etc.