The owner of these two buildings needed to connect the left building to the building automation system already in place on the right side. Initially, this was achieved with a radio link between the two ventilation towers in the
center of each building.

When new hi-def CCTV cameras were added, the radio link could no longer cope with the bandwidth requirement. Replacing the radio link with a Longbow optical link removed the bottleneck at the fraction of the cost of renting a dark fiber from the local telco.