The Expedition Skills Seminar - Muir led by RMI Guides Dave Hahn and Billy Nugent attempted to summit Mt. Rainier early this morning, but snow instability forced the teams to turn at the top of Disappointment Cleaver today. The is headed back to Camp Muir and will spend their remainder of their time on the mountain training before descending to back to Rainier Basecamp tomorrow afternoon. Congratulations to today's team!