NBC 7 reported that construction workers at the San Diego International Airport's Terminal 1 dug up a hand grenade. The grenade was later found to be an old inert training tool that posed no threat to anyone as it did not have the potential ever to explode.

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

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

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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.