You can hear whether they're changing gear or slowing down.

BBC: The secret button at pedestrian crossings

One 26-year-old local policeman changing into riot gear said he personally knew perhaps 100 of the protesters he was policing.

BBC: Why Slovenia is content no more

As I wrote in my book Net Profit, Cisco used to maintain a healthy paranoia that made it very aware of changing technologies and led to a strategy of acquiring companies that made the gear its customers were buying it used to make around 60 such deals a year and it was very good at integrating these buys.

FORBES: Can Cisco Regain its Mojo?