For one week, the six radio stations of the Zimmer Radio Group in Joplin, Missouri have dropped their formats, instead airing non-stop, community-based tornado and recovery programming, including calls from listeners, pleas for help, offers of help, and on-going news coverage of the single deadliest tornado ever in the United States.

The community has rallied behind this effort. Their coverage, and the city’s gratitude, have been pervasive.

On Sunday, at 5:41 p.m., all six stations went silent, observing a city-wide minute of silence exactly one week after an EF-5 tornado ripped through the city.

Here’s a behind-the-scenes look at how radio broadcasts silence. Pictured is Chad Elliott, Operations Manager at Zimmer.