WASHINGTON — Senators vetting the nomination of Pete Hegseth for defense secretary received an affidavit Tuesday from a former sister-in-law alleging that the onetime Fox News host was abusive to his second wife, to the point where she feared for her safety. Hegseth denies the allegations. [time-brightcove not-tgx=”true”] The sister-in-law, Danielle Hegseth, was formerly married to the nominee’s brother, and in an affidavit obtained by the Associated Press, she said she believes that Pete Hegseth is “unfit” to run the Defense Department based on what she witnessed and heard.