We arrived at the target floor. We knew there were cameras everywhere. If they saw us in this area, we’d only have a few minutes before guards arrived. Our next stop was the fire suppression closet.
Now the challenge: we had to build our device. We worked by light reflected through a four-by-eight-inch window. As people left for home, they passed our closet, but we remained undetected.
Part 4 of 7, (to be continued)