Awesome! I'm seriously impressed by how well the point cloud renders the DC cityscape.
Mind my asking what kind of aerostat you're using?
Just curious, what are the regs on flying a tethered camera in DC? I also do aerial photography, and I've got family there. No real plans to visit at the moment, but if I ever do get the chance, it'd be nice to know if it's ok to do aerial photography while I'm there. (The last time I did photography in DC, I unwittingly set up my tripod in a no tripod zone, and had a particularly un-fun run-in with security. Figured I'd ask this time.)
That shot of the Jefferson Memorial surrounded by blossoms made the whole synth for me. Beautiful work.