People who live through life threatening situations sometimes describe a calming presence or guiding voice hat helps them survive.

VOA: special.2010.02.24

There was something threatening in the man's cool quiet voice.

VOA: special.2010.03.20

But then our busted patent system intervened in the form of a threatening phone call from the CEO of Nuance Communications (NUAN), a big voice recognition firm.

FORBES: 5 Reasons to Scrap Our Patent System: #1. Apple's Siri