The main gate to NAS North Island on Coronado. Navy photo

The discovery of a potentially suspicious device attached to a truck entering Naval Air Station North Island Tuesday prompted a roughly hourlong closure of the main gate to the installation along with nearby public traffic lanes until authorities determined the object was innocuous.

An inspector at the naval aviation facility on the north end of the Coronado peninsula noticed the unidentified object — a box with a wire protruding from it — on the undercarriage of the commercial vehicle during a routine check about 8:30 a.m., said Kevin Dixon, public affairs officer for the station.

Base officials closed the Stockdale Gate, the primary entrance to the installation, to allow inspectors to assess the situation, Dixon said. Coronado police, meanwhile, shut down several blocks of adjacent Alameda Boulevard as a further precaution.

After determining that the device attached to the truck was simply part of its operating system, naval personnel gave an all-clear to reopen the entrance to the base, Dixon said.

Traffic around the station remained somewhat heavier than usual due to the closure through 11 a.m. or so, the spokesman said.

Though armed forces facilities around the nation have been on heightened alert following the death last week of Iranian military leader Qasem Soleimani in a U.S. drone strike, the security measures undertaken Tuesday morning at the Coronado air base were standard operating procedure, Dixon told City News Service.

“What went on today would have gone on any day,” he said.

–City News Service