Looks like our two bows are back in the picture - literally.
These two photos of bridges, one in NYC, and the Golden Gate in San Francisco, look like two bows to me. Just looked it up and an arched bridge can be termed a bow bridge. They also could be alluding to the two coasts.
Plus, remember those detailed maps and plans found earlier were of New York City, San Francisco and Rome.
Also they want to bomb bridges