A search for Zachary Weston, 22, of Meriden, Connecticut, continued into its fourth day Monday with ground and air operations involving more than 20 park staff. Weston was reported overdue from a day hike on Thursday, August 11th. The search area extends from the Nisqually Glacier west to the Kautz Glacier and from the parking area at 3,600 feet to 11,400 feet. Searchers discovered boot tracks ascending a rocky ridge to the east of Kautz Glacier to an elevation of 10,000 feet. The tracks match the type of shoe Weston was wearing and provide the best lead so far in the search. Searchers have been unable to find any other clues to Westons course or whereabouts. Weston was not equipped for an overnight stay and his exact hiking plans are unknown. Searchers are working in very challenging, steep terrain with many cliffs, waterfalls, and rivers with high water flows. A Hughes 500 helicopter and a Long Ranger are also assisting in the search. Weather conditions have been favorable, with clear skies and warm temperatures. The search was to resume on Tuesday with further ground and aerial reconnaissance, including a search of the summit crater and steam caves. The IC is John Piastuck.