A UH-60 Blackhawk helicopter crashed into Surprise Glacier, near Mount Gannett. Recovery efforts were hampered by adverse weather conditions, preventing the recovery of wreckage. In 2012, an Alaska National Guard helicopter discovered wreckage and debris during a training mission. In 2014, the remains of 17 service members were recovered. A navigational error, likely due to incorrect wind forecasts, is suspected as the probable cause. Precipitation static also contributed to radio reception difficulties.A UH-60 Blackhawk helicopter crashed into Surprise Glacier, near Mount Gannett. Recovery efforts were hampered by adverse weather conditions, preventing the recovery of wreckage. In 2012, an Alaska National Guard helicopter discovered wreckage and debris during a training mission. In 2014, the remains of 17 service members were recovered. A navigational error, likely due to incorrect wind forecasts, is suspected as the probable cause. Precipitation static also contributed to radio reception difficulties.