Back to School August 21, 2023 6:19 am First day of school arrives for many Northern Virginia students News4’s Juliana Valencia and Joseph Olmo covered Prince William County and Fairfax County students’ return to the classroom. Local 1:49 Hotel agrees to increase security after string of crimes 1:43 Residents displaced from Columbia Heights apartment building after explosion 2:40 Thousands of DC bus lane tickets going unpaid 22:10 Apartment building closed after explosion: The News4 Rundown 3:12 Missing Manassas Park mom's husband denied bond