Barta IV:
Brawley, California
Barta IV:
Holtville, California
Barta IV:
Yuma Proving Ground, Arizona
Barta IV:
Dateland Ranch, Arizona
Barta IV:
Southwest Jojoba, Arizona
Barta IV:
Gila Bend, Arizona
Barta IV:
Rossevelt, Arizona
Barta IV:
Lake Isabel & Lake David, New Mexico
Barta IV:
Albert, New Mexico