BOSTON, Massachusetts -- What do police officers do in their cruisers during their off-time?
If you're Boston Police Officers Stephen McNulty and Kim Tavares, you break into an a cappella version of "God Bless America".
Their dash-cam recorded the performance. So did a dispatcher.
"Delta 103?"
"103," McNulty responds.
"Open mic, open mic," the operator responds. "Sounds good. Happy Fourth of July."
(Video courtesy Boston Police Department)