Revisiting the EPA Lake Guardian

Next up is the Lake Guardian which is operated by the Environmental Protection Agency.

 She has appeared on this blog in the past.

 It was pretty cool because as she was approaching the John G. Munson, she gave a master salute.  That was promptly returned by the Munson and I love the sound of ship horns.  If seeing the Munson didn't wake me up, that did.

 Two ships passing in the morning.

And the Lake Guardian continues her trek around the Great Lakes, studying the effects of pollution on them.