June 19, 2012 3:30 pm Fourth of July Travel Expected to Sky Rocket AAA anticipates 42.3 million Americans to make a 4th of July trip, more than have traveled for the holiday in a decade. US & World Videos 2:59 2 San Jose police officers shot, injured in gunbattle at hotel 1:46 Pursuit standoff causes traffic backup in Solano County 3:23 UC Davis finds brain sizes are growing 3:36 Waymo expands driverless taxi service 5:21 A closer look: 2 police officers shot, injured in San Jose