Security high around G20 venue as leaders begin to arrive for summit

Tight security is in place on Friday  around the G20 venue, as leaders begin to arrive for summit in the eastern city of Hangzhou. Police and roadblocks were seen early in the morning, and soldiers began stopping and inspecting vehicles and pedestrians for days before the summit. Hangzhou has banned flights by drones, and has launched nearly 700 projects to refurbish expressways and waterworks. The Sept. 4-5 summit will see global heads of state, including U.S. President Barrack Obama and German Chancellor Angela Merkel, descend on the city of nine million.