Democratic presidential nominee Joe Biden was officially endorsed by the International Association of Firefighters last week, unsettling President Donald Trump. The commander in chief took to Twitter on Wednesday to lash out, claiming he has “done more for Firefighters than this dues sucking union will ever do,” adding how he does not get paid any money.

Conservative Fox News personality Dan Bongino tweeted out how none of the firefighters he personally knows are in support of the former Vice President on Monday, which Trump retweeted on Wednesday morning.

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Bongino’s tweet received over 4,000 responses, many of which came from people who have professed support for Trump during the 2020 race. Trump responded to this by retweeting nearly 60 of those responses. Here is a handful of the tweets Trump selected:

Notably, one user who claimed her husband would vote for Trump changed her Twitter handle to “**** Donald Trump” after her message was retweeted by him. Trump has since un-retweeted it.

Biden responded to Trump’s Twitter tirade later in the day. “I understand the president’s been tweeting a lot about me,” Biden noted during an Iowa City campaign stop. “I wonder why the hell he’s doing that? Anyway, imagine I’m going to be the object of his attention for a while.”