Resident Maria Delgado told CNN affiliate KVVU
she heard the piece bounce down the roof, hit a wall and land on the sidewalk in front of her yard. She wasn't sure where the giant piece of metal came from.
Nearby Nellis Air Force Base confirmed the panel belonged to an A-4 military plane operated by Draken International, a military aircraft contractor. The plane lost the part during a "routine training mission," but the cause is still unknown, Draken officials said.
Federal Aviation Administration officials arrived shortly after the incident. No one was injured, though debris damaged a resident's car.
"All these kids out here ... what if that airplane door would've hit them?" resident Anthony Pitts told the affiliate.