Surely a classic example; certainly an expensive afternoon.
http://www.juneaucrondahls.com/ships...02/cal0209.htm September 10, 1999: A Temsco helicopter crashed on Herbert Glacier stranding five cruise ship passengers overnight in 25 degree temperatures and snow on the glacier. Two additional Temsco helicopters crashed on Herbert Glacier in an attempt to rescue the pilot and passengers on the first helicopter.