Don't know. I guess as with any creature of this world or not, it would depend on their intentions. I don't want to be some 4th grade alien's first disection experiment.
I usually don't give reverence to anything, as all things are fleeting, and nothing is absoulte. If their intentions were benevolent, I would give them the due respect that I do any creature.
However if they were on a mission of conquest or something, I would have to battle them for the sake of my family. I would hope that I could be brave enough to give them no mercy and no quarter. They wouldn't harm my family.
"That's the problem with drinking ... If something bad happens you drink in attempt to forget; if something good happens you drink in order to celebrate; and if nothing happens you drink to make something happen." -- Charles Bukowski