5 people were killed when a tourist helicopter crashed near Lake Mead, Nevada.  Lake Mead is the reservoir associated with the famous Hoover Dam and is the largest reservoir in the USA.

The helicopter, operated by Sundance Helicopters was on a sunset tourist flight when it went down at about 5pm local time Wednesday 7th December.

Washington Post link:
http://www.washingtonpost.com/national/tour-helicopter-from-las-vegas-believed-to-have-crashed-near-lake-mead/2011/12/07/gIQAyFNodO_story.html?tid=pm_national_pop