Corrected entry: When the one-legged sniper arrives in New York, he is picked up by surveillance cameras, and the pictures from there are used to track him down. But every person arriving in the US is photographed at customs, so there would be a clear portrait of him on file - and no need to use the blurry surveillance picture.
Corrected entry: It is extremely unlikely that all those men with machine guns would be able to get into the Guggenheim - not that I've been there, but I'm pretty sure there are metal detectors and that they do not let guys with guns into the museum.
Correction: Reguardless of whether or not there are metal detectors, if 10 guys with machine guns show up, you are not gonna stop them. it is entirely possible that they were let in by a bribed security guard or that they threatened the guards with the guns.
Correction: Except that it is easy to "fool" facial recognition software by using a disguise. The surveillance photo, even if blurry, would be the most up to date photo they have.
rswarrior