The nail gun hose became tangled, causing the powerful tool to fire once. Chandler said Monday he told his friend he didn't know where the nail went, but he felt a sting on the top of his head.
Soon they discovered that the nail was driven into Chandler's skull, so they called an ambulance. He was rushed to a hospital, where a doctor used a common claw hammer to remove the nail, Chandler said.
Chandler said he feels "very lucky, very, very lucky" to have escaped serious injury.