From Will:

“I was walking home from work yesterday, and I saw a bunch of small stencils on the sidewalk on Montgomery St in the Financial District (the commercial center of San Francisco, obviously).  There were only two variations, but they were all over the place - sometimes 3 or 4 per block, stretching for 7 blocks or more.  This morning, I took shots of several of them, some of which are above.  They’re obviously commemorative of 9/11, and must have been done either late last weekend or very early yesterday morning.  I think they’re fantastic.”