During the night scene in L.A Confidential (1997), Officer Bud White and Dick Stensland are stationed in a car outside a residence, observing as a man inside physically assaults his spouse. In response to the situation, Bud White requests that the central police station dispatch a patrol car, commonly known as a “prowler,” to the specified address.:
Bud White: Hollywood, this is 6-Adam-7. Have Central send a prowler to 4216 Evergreen. Parole violation. Assault arising from a family dispute. We won't be here, but they'll see him.
Then Dick Stensland laughs and Bud White gets out of the car.
Why did Dick Stensland laugh in this scene?