Memorial Day typically kicks off the busiest two-week climbing period of the year on , and this week has kept teams for the on their toes on North America's tallest peak. Rescuers have reportedly spent several days trying to reach and deliver aid to five climbers who are suffering from and . According to a from the National Parks Service, mountaineering rangers received an SOS message via a satellite communication device at 1 a.

m. on Tuesday morning reporting that a team of three climbers on the 20,310-foot summit was hypothermic and unable to descend. "Rangers maintained two-way communications with the team until approximately 3:30 a.

m., when the team texted that they planned to descend to the ‘Football Field’, a flat expanse at 19,600-foot elevation," states the report. Park helicopters were unable to land in the area due to adverse weather conditions on Tuesday morning, so the Alaska Air National Guard was recruited.

Their crews managed to spot two of the climbers at between 19,000 and 20,000 feet just before noon, while the third was located by a climbing guide near Zebra Rocks lower down. The helicopter was finally able to land at a camp at 14,200 feet at 5 p.m.

In a separate incident, two climbers had been receiving treatment for frostbite at a medical tent at the same camp for several days, and the helicopter was able to evacuate them by air before returning to attempt to reach the climbers higher up the mountain. By 9 p.m.

, one of the three climbers had made their.