The Phalanx CIWS Block 1B mounted on the Oliver Hazard Perry Class Frigate, USS Elrod (FFG-55) in mothballs at the Philadelphia Navy Yard.  Note the FLIR on the right hand side identifying it as a Block 1B Phalanx. 
 If you view full-sized, the reflection in the FLIR shows the flight deck and even the photographer's car.
<a href="//commons.wikimedia.org/wiki/User:Needsmoreritalin" title="User:Needsmoreritalin">Chuck Homler d/b/a FocusOnWildlife</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>