WASHINGTON – This morning’s surprise announcement by FBI Director James Comey that Hillary Clinton should not face criminal charges — even though she and her aides were “extremely careless in their handling of very sensitive and classified information” — rocked the political world, just hours before President Obama’s first campaign event with Clinton.

Here are five quick takeaways from today’s bombshell announcement.

• It’s good news for Clinton, delivered in the most damaging way possible.

Despite Comey’s announcement that “no reasonable prosecutor would bring such a case” – and Attorney General Loretta Lynch’s previous vow to defer to the judgment of FBI agents and prosecutors — today was a bad news day for Clinton. Comey’s assessment of Clinton’s private server use and of the process Clinton’s lawyers used to assess and purge thousands of emails was truly damning. Not only were 110 emails in 52 emails chains found to be classified at the time they were sent, 8 of those chains contained information that was top secret at the time. In addition, three emails that had been deleted by Clinton’s lawyers, but recovered by FBI investigators, also contained sensitive documents. Comey didn’t find that the lawyers acted nefariously, but he did imply that Clinton’s lawyers acted incompetently when they purged thousands of documents, making FBI investigators’ jobs harder, and possibly causing some emails – and potentially some classified information — to be lost forever.

• It eclipsed what Clinton expected to be a great news day.

Comey’s announcement came just before Clinton was scheduled to board Air Force One with President Obama in Washington and stand shoulder-to-shoulder with him in North Carolina at a rally that was aimed at making Clinton look more trustworthy. That objective is effectively shot, and even a brilliant speech from the president won’t be the day’s top headline.

• Comey undercut one of Clinton’s key refrains about her email use.

While Clinton has repeatedly said she never sent or received any document “marked classified,” Comey said today that in the cases of the 110 emails: “There is evidence to support a conclusion that any reasonable person in Secretary Clinton’s position … should have known that an unclassified system was no place for that conversation.”

• Comey’s suggestion that “hostile actors” could have hacked sensitive information is politically problematic.

“It is possible that hostile actors had access to Secretary Clinton’s email account,” Comey said, pointing to the facts that Clinton’s server was not sufficiently secured, the accounts of people with whom Clinton corresponded were hacked, and Clinton used her personal email devices in places around the world including “territories with sophisticated adversaries.” For Clinton, whose experience as head of the State Department and worldwide diplomatic experience are key selling points in her presidential campaigns, this is politically devastating.

• It gives GOP rival Donald Trump a perfect talking point

Minutes after Comey’s announcement, Trump took to Twitter. “The system is rigged. General Petraeus got in trouble for far less. Very very unfair! As usual, bad judgment,” Trump tweeted. “FBI director said Crooked Hillary compromised our national security. No charges. Wow!”

That sentiment is likely to be shared not only by Trump supporters, but also by Republicans and independent voters Trump is trying to woo. It also offers welcome relief to the Trump campaign with a reset of the political news cycle that had revolved for days around an anti-Clinton email that drew accusations of anti-Semitism.