The location is comprised of a small power plant and nuclear storage site bombed long ago, with containment reactors slowly leaking out radiation. Clark Field now sports broken concrete and dead corpses, succumbing to the poisoning or the pack of golden geckos.
The area consists of a highly irradiated industrial complex, with only the exterior accessible to the Courier. Several golden geckos roam the area. A small, fenced-in area on the southeast edge of the location is not irradiated and a white "NAC" container with a skeleton and some loot lying next to it can be found.
Near the south entrance from the highway is a dead pack brahmin. One of two isotope-239 igniting agent containers lay on the ground nearby, required for the quest Come Fly With Me. When approaching from the north, a deceased prospector named Mr. RADical can be found along the side of the road. He is wearing a radiation suit and the second isotope-239 igniting agent is found on his corpse, along with his journal.
One Isotope-239 igniting agent and Mr. RADical's journal is found on the body of Mr. RADical. The second bottle of Isotope-239 igniting agent is found near a deceased pack brahmin near the south entrance.
Clark Field appears only in Fallout: New Vegas.