The U.S. Secret Service pushed back on accusations that the department is not prepared to protect presidential candidates.

“Recent media reporting characterizing the U.S. Secret Service as unprepared for candidate protection is categorically false,” Secret Service communications director Cathy Milhoan said in a statement Thursday, adding that the Secret Service has more than “100 years of expertise in ensuring the safety and security of protectees.”

The doubling down from the Secret Service on its commitment to protect candidates comes after concerns were raised over security when two protesters rushed the stage at former Vice President Joe Biden Joe BidenThe Memo: Warning signs flash for Trump on debates Senate Republicans signal openness to working with Biden National postal mail handlers union endorses Biden MORE’s rally Tuesday night in Los Angeles.

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The Secret Service prepares for presidential elections immediately after the last, in this case in January 2017, Milhoan said.

The department identified thousands of Secret Service agents, uniformed division officers and administrative support staff in March 2019. These employees were “rigorously trained” from April through October 2019.

“The comprehensive training included instruction related to physical protection, threat assessments, emergency medicine, and constitutional law,” Milhoan added.

At this time, no candidates have requested protection from the Department of Homeland Security (DHS), Milhoan said.

A candidate who reaches established criteria can formally request protection through the DHS. After a formal request by a candidate, a recommendation is made by the bipartisan Candidate Protection Advisory Committee, which consists of the House and Senate leaders and an additional member selected by the committee.

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House Homeland Security Committee Chairman Bennie Thompson Bennie Gordon ThompsonDHS IG won't investigate after watchdog said Wolf, Cuccinelli appointments violated law Hillicon Valley: Dems seek to expand DHS probe after whistleblower complaint | DHS rejects House subpoena for Wolf to testify | Facebook rolls out new features for college students DHS rejects House Democrats' call for Wolf to testify MORE (D-Miss.) sent a letter to acting Secretary of Homeland Security Chad WolfChad WolfDHS IG won't investigate after watchdog said Wolf, Cuccinelli appointments violated law Judge blocks some asylum restrictions, rules Chad Wolf serving as DHS secretary likely unlawful DHS asks Schiff to reconsider expanded probe after whistleblower complaint, declines additional interview requests MORE and members of the Candidate Protection Advisory Committee on Wednesday asking them to immediately convene to decide whether to provide protection for Biden and Sen. Bernie Sanders Bernie SandersSenate Republicans signal openness to working with Biden Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll Schumer, Sanders call for Senate panel to address election security MORE (I-Vt.).

Animal rights protesters with the group Direct Action Everywhere rushed the stage at Biden’s Tuesday night rally. One tussled with Biden’s wife, Jill Biden, and Biden aide Symone Sanders Symone SandersBiden campaign ratchets up courting of Black voters, specifically Black men The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Trump, Biden renew push for Latino support Sunday shows - Trump team defends coronavirus response MORE also grabbed a protester from the stage.

Protestors with the same activist group had previously interrupted a Sanders rally in Nevada last month, with one grabbing the microphone from the senator.