A person diving a pickup truck was involved in a standoff with Tulsa (OK) Police at the entrance gate to the Tulsa Air National Guard Base.
The incident began at about 11:30 a.m.
Streets have been blocked off and the bomb squad is on the scene.
Police had their weapons aimed at the truck and were using ballistic shields for protection. At one point a member of the 138th Fighter Wing security force armed with a rifle approached the truck, getting to within about 15 feet, before slowly backing away.
This is an ongoing scene.