It was late February 1987 in winter Ranger School at Dugway, Utah. After completing our Ranger mission, we looked to the west and saw an enormous winter snow storm approaching rapidly. The Ranger Instructors (RIs) ordered us to road march rapidly to a point 60 kilometers due south.
The blizzard struck almost immediately with incredible force. We roped together and continued our force march through the blustering storm. Finally we arrived to a single squad tent with a stove.
Source: War Story: Winter Ranger