What's interesting too is that the descent path of the rocket has an engine failure trajectory that will ensure the rocket will fall into the ocean if a failure occurs during the powered descent.
That's a function as much of physics and geography as planning, and one of the reasons Cape Canaveral exists---there's a lot of Atlantic Ocean in which to ditch a failing spacecraft on either the launch or landing vectors.
There's a reason the United States' launch facilities are primarily along the east coast of the country.
First flight since the failure on June 28
Attempt to land 1st stage on land near the launch site
First flight of an upgraded rocket