The situation leading up to this huge dose of karma for the ATF Agent goes thusly:
Woman’s husband buys a shotgun.
Sometime later an ATF Agent attends the house when the woman and her sons are the only ones home.
He asks to go inside and the woman refuses. The ATF Agent tries to force entry.
The woman freaks out and calls 911, telling them there is a man impersonating a police officer trying to break into her house.
No one likes the ATF, not even other law enforcement officers.
Hearing the big tough federale cry like a little bitch was the best part.