Charles Briggs, retired CIA officer who assisted JFK museum, was accused of deception by a federal judge

Charles Briggs, a retired CIA official who assisted the Sixth Floor Museum in Dallas as a researcher and writer, once submitted a "dishonest" sworn affidavit in a high-profile arms smuggling case in Texas, according to a federal judge.

Briggs, who died November 4, served the CIA as a private contractor while assisting in the creation of the Sixth Floor M…