Mr. Pat celebrates 20th anniversary
The Tulsa District U.S. Army Corps of Engineers navigation maintenance vessel, Mr. Pat, sits docked at Robert S. Kerr Lake on the McClellan-Kerr Arkansas River Navigation System near Sallisaw, Oklahoma, June 15, 2016. Mr. Pat was christened and put into service at the District on June 28, 1996, and has been instrumental in the facilitation of maintenance along the Tulsa District's portion of the MKARNS. (U.S. Army Corps of Engineers photo by Preston Chasteen/Released)

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Photo by: Preston L. Chasteen |  VIRIN: 160614-A-IF821-001.JPG