Naval Station Mayport briefly locked down Wednesday morning after security reported that an unauthorized vehicle made it onto the installation, halting all inbound and outbound traffic while the base was swept. A short time later, officials reopened the gates and said there was no threat to personnel or the installation.
What happened
Around 9:35 a.m. Wednesday, Naval Station Mayport's social media accounts posted a blunt warning: "THIS IS NOT A DRILL. ALL GATES CLOSED." Inbound and outbound traffic was immediately stopped while security forces began investigating. That initial alert, along with word of the sudden gate closures, was reported by First Coast News.
Base response and all clear
Later in the morning, Naval Station Mayport posted that security forces had "responded swiftly and effectively" and that all gates were back open. The same Facebook statement emphasized that there was no threat to personnel or the installation, according to News4JAX.
How long the closure lasted
Local coverage indicates the gates were shut for roughly 20 minutes before an official all-clear went out, although early reports varied as news outlets scrambled to confirm details in real time. Action News Jax first reported the closure and later noted that officials had reopened the installation.
Why Mayport matters
Naval Station Mayport is a major East Coast homeport with multiple ships and aviation units, so even brief security pauses can ripple into local traffic and day-to-day operations. The station's installation guide from Navy Region Southeast lists several gates and a visitor welcome center. Ships have been moving through Mayport as recently as early May, when the littoral combat ship USS Wichita returned to the base, according to Stars and Stripes.
Security forces are continuing to investigate, and base officials have not released additional information about the vehicle or its driver. Anyone with business on the installation is being urged to follow official Naval Station Mayport channels for updates and to be ready for short, precautionary interruptions if a similar situation happens again.
