In the first photo, I noticed the referee wearing a mask. ( no whistle dangling from his mouth) Keeping thge whistle in your mouth is not as easy as it looks. when I officiated at CYO games, thge damn whistle kept slipping out of my mouth..After a while, I gave up. oh---then there was the time I called a three=-second violation on the team playing defense..After the game, a woman stormed out of the stands and demanded to know my name..I told her I forgot--I don't think she was satisfied.