The American Federation of Government Employees, the government’s largest union, released a radio ad Tuesday that calls on federal workers to “set the record straight” on what they do — and fight a Republican House plan to slash government spending by $61 billion.

The union spent $253,000 on the national buy, which is running in two dozen media markets on almost 100 radio stations. AFGE has pledged an additional $100,000 in seed money to help defray the cost for locals in markets where the ad isn’t running.

The ad’s message is that budget cuts being debated in Congress would have devastating results for government services Americans rely on every day. It urges all public-sector workers to write and call their members of Congress to fight the proposed cuts.

Here’s what it sounds like: