Falling trees

We are losing several large oak trees around our house. Mike cut down the tree closest to the house and the very next day this happened:

a completely healthy-looking tree fell. While Mike cut down the first tree, we parked the car right here, next to the basketball goal. We are very thankful that the tree didn't fall at that time.

The tree had looked healthy to us but when we looked at the roots after it fell, we could tell that it had been rotting underground for a long time. Now, we are very aware of where we park, or stand.....

I'm afraid that we have at least 2 more trees to remove, and those are just the ones we can see are dead.