abc's jon donvan tells us other ways. >> reporter: all the ways we find to say the simple words "we areh you, boston." it's the flags brought down to half staff, from the u.s. capital, to a modesto, california, ballpark. it's the way to say nothing and, therefore, everything. at a moment of silence at the new york stock exchange, and another at the house of representatives, and at countless sporting events across the country. it's finding a place to scribble the right words -- on a pair of skates. on the side of a florida bridge. it's folks who are runners tweeting in pictures of themselves in their running shirts -- hashtag "raceshirttuesday." it's an astronaut, tweeting in high-up photo of boston, which looks for all the world like a shattered glass. "a somber spring night," commented by commander chris hadfield. and then for sports-mad boston, the ultimate rival's tribute, the "chicago tribune" sports page statement of identity. the chicago red sox, the chicago bruins, well, as even this yankee loving dad says to his yankee-loving daughter, today we're all rooting for boston. yes, we

for "nightline," i'm jon donvan in washington. >> a great american city.atching abc news. world news now. good morning america tomorrow. we'll have the latest from here. we're all on line. good night, america. blach