 So you go to some of those small stems, smaller branches. Take a sharp knife edge and just scrape the bark. You're looking for green tissue underneath the bark. Pliable. Are those branches pliable or do they snap? If they're dry and they're snapping, they're dead. If you don't have any green tissue, they're not alive, they're dead. If they're dead, they're not going to come back. So...