Independence Day parades, another Joey Chestnut win and fireworks marked Friday's Fourth of July celebrations across the U.S. The big picture: Millions of Americans traveled for the holiday, facing sweltering heat,

Displays of patriotism were evident at parades and hot dog eating contests, even at a time of deep political divisions among Americans.

Procession kicks off from Boston City Hall Plaza at 9 a.m. and meanders to the Old State House for the annual reading of the U.S. Declaration of Independence.