Now, they're waiting to see whether President Donald Trump will block the release of files that could shed light on a tragedy that has stirred conspiracy theories for decades.

The National Archives has until October 26 to disclose the remaining files related to Kennedy's 1963 assassination, unless Trump intervenes.

The CIA and FBI, whose records make up the bulk of the batch, won't say whether they've appealed to the Republican president to keep them under wraps.

The still-secret documents include more than 3,000 that have never been seen by the public and more than 30,000 that have been released previously, but with redactions.