What is one of the ummanned air vehicles called?

Question: What is one of the ummanned air vehicles called?
- Keywords:
  aircraft,
  technology,
  vehicles
Asked by ojcz to James on 13 Mar 2012.
- James Vokes answered on 13 Mar 2012:
  
  They don’t have specific names. I don’t think. They have tail numbers. I just call them all “Watchkeeper” which is the project name.

Question: What is one of the ummanned air vehicles called?