Adam Walker (Yellow Jacket), Army Corps of Engineers Nashville District project manager, briefs Douglas Lamont, senior official performing duties of secretary of the Army for Civil Works, on the challenges of maintaining and operating the deteriorating Chickamauga Lock Feb. 28, 2017 in Chattanooga, Tenn. The Tennessee Valley Authority owns the dam while the Nashville District operates and maintains the lock. (USACE

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Photo credit: © Conner Flecks / Alamy / Afripics
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