WALLA WALLA, Wash. – The Walla Walla District of the U.S. Army Corps of Engineers will hold an open house and information meeting about an updated McNary Shoreline Management Plan on Thursday evening, June 9, at the Pasco Red Lion hotel. The open house begins at 6 p.m., and the public meeting is 7 p.m. to 9 p.m. at the hotel at 2525 North 20th Avenue in Pasco, Wash.