There have been 4 recent helicopter rescues on Denali:
*Solo climber Luc Benoit fell 1,000 feet while climbing the West Rib
*Guide climber suffering high altitude pulmonary edema at the 17,200-foot camp
*A climber suffering from altitude illness at 14,200
*A climber with a kidney stone was airlifted from 7,800 feet
Mount McKinley is reporting a 39 percent summit success rate this season.