i think the 5th one is the most stupid "oh those men are in protective suits and wearing oxeng masks i'll just stand here completely unprotected and take a photo
Here is what happend. Those men are cleaning up toxic waist. The man with out the protective suit walks up and starts talking there ear off.
With the toxic waist there in front of them.
In the third one the two men are useing a metal ladder to work on power lines.