Train Bridge in Action

I've taken many pics from my daily bike ride trip across 2nd Narrows Bridge, but I've only been able to get this shot maybe 3 times total. I think my serendipitous timing on this shot is my best thus far. Because the framing is so tight in this 4/3 aspect ratio, I couldn't crop it to my more typical 16:9 or wider. I'm still amazed at how such a small tug boat can pull a huge ship!!