Nasty security guard masturbating on duty

Yesterday, while I was standing outside in the balcony, I saw my security guard doing something very kinky. I think he was bored and wanted to have some fun and I saw the whole action with my eyes when I kept watching him jerk off.
He sat down and pulled his shirt off and started playing with his nipple with one hand. With his another hand, he unzipped his pants and took out his big cock and started milking it too. Finally , he reached climax and shot his cum out all over his pants.