Tuesday briefing: JD Vance and Kamala Harris; Trump rally shooter; Alzheimer’s test; Stephen Nedoroscik; northern lights; and more

Former Vice President Mike Pence criticized Kamala Harris's election as a "sucker punch." An individual who shot at a Trump rally had researched the attempted assassination of a foreign leader. Venezuelans protest disputed election results. Images of a malnourished Palestinian boy led to life-saving aid. A blood test can diagnose 90% of Alzheimer's cases. The US men's gymnastics team won their first medal since 2008. The Northern Lights may be visible tonight. An article provides tips for navigating European customs, including tipping and hotel etiquette. Airline safety videos are becoming more elaborate and engaging.