Cool looking snake. That was cool of you to do for the older couple. Snakes are amazing creatures. Any creature that lives out in the Arizona desert 24X7 in the summer has my respect.
The rattlers are coming out in full force around here now. It seems the little buggers are not rattling like they used to in years past which makes it a bit more dangerous. The 2 I have come across in the past month did not make much noise. In the winter I let my kids play in the wash behind my house, not anymore though. The heat is on here in AZ.