It’s not glaring ?
Plumbers have been allowed to enter people’s houses during lockdown, FAOs have not. Should a plumber have picked up the virus while fixing a tap, he goes home. The FAO goes back to a central base, typically within a police station, which tends to be occupied by police officers.
If the infected plumber passes it on to his family and is off work, people’s taps will drip. If the FAO picks up the virus and returns to a police station, filled with police officers, then those officers become infected and have to stay off work, it becomes a bit more serious for society.
Hope that helps clear the ambiguity of my point.