Its not like these people just start their day of from home. This isn't some 9-5 office job.

They go to an office and park their cars in the sane lot, they kit up in a locker room and spend an hour shorting the shit with all their bros, and then talk about who is wearing what subtle things so they can tell Jenkins from Thompson at a distance. They know each other. They hang out at each other's hosts on the weekends. Their kids play together. They know who is suppose to be there that day. They have a game plan as to who does what. They chit chat about music and guns and the weather and cars and TV shows quietly in the downtime.

These people are not you. They can tell when someone else just shows up. They are organized when required, idiosyncratic about key details when needed, and hierarchical. An outsider only gets a pass when a CO tells them the outsider is OK.