Chris Sherek, an Old Hickory Hydropower trainee at the Old Hickory Lock and Dam from the U.S. Army Corps of Engineers Nashville District talks with John Fitzgerald Jr., a student from Memphis, Tenn., about operation procedures at the Old Hickory Lock and Dam on June 27, 2013. Fitzgerald was part of a group of 17 students who attended the Tennessee State University Engineering Department's four-week National Summer Transportation Institute program that introduces students to various aspects of engineering.