Before the new Terminal 1 opens later this year, people should plan for another round of construction-related traffic interruptions when driving in and out of the airport.

Around 12:10, a construction worker uncovered what looked like a hand grenade while working at San Diego International Airport's (SAN) Terminal 1, triggering a response from local law enforcement officers. While that is a perfectly understandable response, it proved unnecessary, as the inert object was a training grenade that could not explode.

Construction workers at the San Diego International Airport’s Terminal 1 dug up a grenade Thursday, prompting a response from law enforcement.

In a surprising discovery, construction workers at San Diego International Airport unearthed what they believe to be "an old, inert hand grenade" in the area of Terminal 1, a spokesperson for the Port of San Diego confirmed Thursday afternoon.

The incident did not impact the airport's operations since the ordnance did not have the capability to explode, the Port says.