But it turned out that the man wasn't a person at all - it was a mannequin made to look like Clark Griswold, the buffoonish dad played by Chevy Chase in the holiday comedy "National Lampoon's Christmas Vacation". KVUE news posted a video of the incident on Facebook, which was captured on the family's Nest Cam that day.
"He was doing everything he could to get the ladder! Whatever he had to do, he was going to save old Clark Griswold".
After a few frantic moments, he yelled "HELP!" to people driving by on the street and called 9-1-1.
In 2017, a Colorado man's holiday display recreating the Griswold scene scared his neighbors enough for them to call 911.
The Heerlein family in Austin, Texas, chose to recreate the decoration scene in National Lampoon's Christmas Vacation, complete with a hanging Clark Griswold.
Police reportedly came to the home to find the man was a dummy.
Following the incident, the family felt so bad about Alfred's reaction. "We have a very special gift that we would like to give him and we'd like to tell him thank you", Wheless said.
Alfred, who eventually realized that the Clark Griswold decorations weren't real, had a sense of humor about the holiday mishap. "Except when I started talking to him, he never said nothing!" the man told KVUE.
The Heerlein family has thanked the passer-by for trying to save the hanging "man" with a $500 gift card.
"Then I thought, 'Oh my God I hope he's not dead, let call 911'".
Since then, the family added a sign to the bottom of the display that explains the decoration for anyone else who might be concerned.