Keys on blue lanyard with brass ship charm

Found a set of keys this morning around 9:15am in the parking lot behind the MacArthur Center in Norfolk, Hampton Roads. There’s a blue nylon lanyard with about 6-8 keys and a small brass ship charm; there’s also a black USB drive on a separate ring. One key has a bright green plastic tag with 'APT 4' scribbled in black Sharpie. The lanyard is faded from sun and the whole thing looks a bit worn but functional. I’d be glad to get them back to their owner—if the details line up, we can arrange a pickup at a nearby public spot.