San Diego Unified School District is preparing to start off the 2020-21 school year with remote learning. However, children with learning challenges may be offered in-person sessions. Plus, 1986’s “Top Gun” inspired a boom in military recruitment. Will its 2021 sequel, “Top Gun: Maverick,” do the same despite the changing perceptions of warfare today? Also, this weekend in San Diego art events includes San Diego Festival of Books, surf rock duo Puerto livestreaming from the Casbah’s stage, The Rosin Box’s August Series and a tapestry by Carlos Castro Arias.