Unmanned Systems Source Share: Aerospace and Defense Unmanned Systems Source Visit Website 2175 E. Valencia Rd. Suite 125 Tucson, AZ 85706 (520) 620-9818 About Map About Supplying unmanned systems, components, subsystems & services. With more than 30 years combined experience, USS has the insight to help power projects for commercial, governmental & public sectors. What's Nearby? Distance: 5 10 15 20 25 50 mi.