Fighter jet intercepts plane during Biden visit to Bay Area.

A video posted on Twitter reportedly shows a fighter jet intercepting a plane violating temporary flight restrictions during President Joe Biden's Bay Area visit. The fighter jet performed a maneuver known as a "headbutt" to get the plane's attention. The North American Aerospace Defense Command responded to three aircraft that violated the restrictions, and all three events "concluded without incident." Biden attended a fundraiser in Kentfield and discussed climate resilience and emerging AI technology during his three-day stay in the Bay Area.