Just found another good article on http://www.ARMY.mil about Sacramento District using their ROV.
VALLEY SPRINGS, Calif., July 7, 2011 — Rising out of the depths of New Hogan Lake is an odd underwater entity. It has bright, glowing eyes, a single powerful claw and a bright green tail that’s hundreds of feet long. Fortunately, it obeys every command of the Sacramento District Park Rangers stationed at the surface. (Link has full article.)
http://www.army.mil/article/61064/