by Michael Teague We had a major earthquake problem. My immediate thought was the safety of the over forty dams we were responsible for. On November 5, 2011, at almost 11 p.m., a magnitude M5.7 earthquake occurred near Prague, Oklahoma. At the time it was the largest earthquake in the state’s history, and I was serving as the Commander of the Tulsa District of the U.S. Army Corps of Engineers. Thankfully, the Corps has a very robust dam safety program, and the Tulsa District is blessed with world-renowned experts.