Sharp Echo
Five local news helicopters were covering the pursuit. In order to prevent a collision and keep clear of the police helicopter, Phoenix area news pilots used a system called Sharp Echo which required all of them operate on one frequency to communicate changes in position or intentions.
Read more about this topic: 2007 Phoenix News Helicopter Collision
Famous quotes containing the words sharp and/or echo:
“Everything I ever learned as a small boy came from my father. And I never found anything he ever told me to be wrong or worthless. The simple lessons he taught me are as sharp and clear in my mind, as if I had heard them only yesterday.”
—Philip Dunne (1908–1992)
“The echo is, to some extent, an original sound, and therein is the magic and charm of it. It is not merely a repetition of what was worth repeating in the bell, but partly the voice of the wood; the same trivial words and notes sung by a wood-nymph.”
—Henry David Thoreau (1817–1862)