In addition, as part of the PCAOB's investigative powers, the Board may require that audit firms, or any person associated with an audit firm, provide testimony or documents in its (or his or her) possession. If the firm or person refuses to provide this testimony or these documents, the PCAOB may suspend or bar that person or entity from the public audit industry. The PCAOB may also seek the SEC's assistance in issuing subpoenas for testimony or documents from individuals or entities not registered with the PCAOB.