National Weather Service meteorologist "Skip" Ely said the dry pattern is caused by a persistent area of high pressure that has dominated North Texas weather since the end of June, blocking normal moisture flows across the South.

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Some are simple in their approach, such as the MotionCAPTCHA project that requires tracing a pattern with the mouse pointer or Capy, a service in beta for touch-based devices.

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"We wish to determine whether those events were indicative of a pattern of behavior by agents or officers of the Secret Service, and need to be addressed systemically, or if they instead constituted an isolated incident warranting action only with respect to the individuals involved, " said the letter from Lieberman and Collins.

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After several years in the marketplace, the clear pattern is that about 45% of satellite radios are retained in service by the car buyer after the initial trial period.

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