A helicopter sprays an EPA-approved herbicide over an Interior Least Tern island along the McClellan-Kerr Arkansas River Navigation System in Oklahoma. This was the first time a helicopter was used. In the past, the Tulsa District sprayed by boat, which was more time consuming, costly and less effective.
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This work, Helicopter used to prepare least tern island [Image 1 of 4], by Nathan Herring, identified by DVIDS, is free of known copyright restrictions under U.S. copyright law.