Why is te fellow in the first picture wearing headphones. he wouldn't hear any trouble?
That is hearing protection. Gun shots are LOUD and can damage your hearing.
More likely, he wanted to protect himself from sonic assault (air horns and such).
Also, I note the position of the trigger and slide. The shotgun's breech is closed, but it is not cocked. This means he "dry fired" (or actually fired) the weapon after loading it. He must not have loaded his last round (his +1), or he expended it. The shotgun will need to be racked before it can be fired.
I can't comment on the rifle in the first picture, beyond noting it is being carried in a safe position. I am not experienced in that type of weapon to judge its status from that picture.
