PHOENIX - Bill Miller, a senior project manager with the U.S. Army Corps of Engineers Los Angeles District's Regulatory Department in the Arizona-Nevada Area Office, speaks with a group of USACE tribal liaisons during the 9th Annual Tribal Nations Community of Practice meeting which ran from Dec. 5-7 at the Area Office. Meeting participants spoke on several topics including impediments to working with tribes, a discussion with USACE headquarters Office of Counsel on legal issues, regulatory issues and a presentation on Gregory Canyon