It’s always a good idea to inspect the garage door “before” you attempt to operate the door from the push button. You 
may have a booby trap waiting to “spring into action”.
To prevent unforeseen damage to the door or to body and limb I usually pull the rope on the opener and test the door manually before proceeding to test the opener.
Experiance has taught me to walk lightly and proceed with care.
I wonder if this guy even knows where his tools are. Leaving them in the garage door is a great way to assure himself of getting more tools for Christmas.
I know Gary Smith to be an upstanding individual of outstanding character. He is a multifaceted pioneer of the home inspection profession and a good friend.