What happened to being ecologically friendly?
And I can’t imagine why a terrorist would ever bother taking pictures of a building. It would be useless, and almost every building worth attacking has, as you show, thousands of pictures.
If you were looking to attack something, you’d be taking pictures of the surroundings, of hidden alleys, of stuff that would be useful for attacking. holes in fences, places where the lights are blocked by obstacles, etc.
The 9/11 terrorists didn’t have to take pictures of the World Trade Center before the flew planes into them.
If they were performing a structural analysis of the building, then they would likely begin by taking photos of the building. Behaving in a manner consistent with planning such an action, but with little other apparent intent is a good way to be labeled as a suspect.