pic.twitter.com/h9L2RYWc 

https://www.theverge.com/2012/8/2/3215016/wi-fi-police-london-olympics

Apparently they were searching the airwaves for unauthorized wifi hotspots, or perhaps other wireless network problems. Similar steps can be taken for office environments. If someone set up a rogue access point in your office, that could open your network to intruders and a number of associated problems. Electronic systems are available that can monitor wifi as well as cellular signals in an office or building and locate and identify any unauthorized signals. Check with us if you need more information.