The BBC's Sarah Smith asks Democrat Abdul El-Sayed why polls suggest his contest against Republican Mike Rogers is so close.
The Super Bass singer is the latest big name to campaign in Michigan, where a tight Senate race is playing out ahead of the 3 November midterms.
"You going after my mom?" El-Sayed shot back as Rogers seemed to imply his opponent might have a family member on a "watchlist".
Footage shows smoke and flames after the F-16 fighter crashed during a training exercise in Michigan, with the pilot ejecting before the crash.
The vice-president and Michigan Democratic senate candidate are in the midst of a war of words that is turning increasingly more personal.
El-Sayed faces Trump ally Mike Rogers in what has quickly become a senate race characterised by personal attacks and insults between the two.
Abdul El-Sayed, the son of Egyptian immigrants, would be the first Muslim US senator if elected in November.
Left-wing outsider Abdul El-Sayed is narrowly ahead of establishment-backed congresswoman Haley Stevens.
