Columbia subject headings:
Data mining--Moral and ethical aspects.
Drone aircraft--Government policy--United States.
Drone aircraft--Moral and ethical aspects--United States.
Drone aircraft--United States.
Military intelligence--Technological innovations--Moral and ethical aspects.
Military intelligence--United States--Evaluation.
National security--United States.
Targeted killing--United States--History--21st century.
United States--Military policy--Moral and ethical aspects.
War--Moral and ethical aspects--United States.
Harvard subject headings:
Drone aircraft--Government policy--United States.
Drone aircraft--Moral and ethical aspects--United States.
Drone aircraft--United States.
National security--United States
United States--Military policy--Moral and ethical aspects.
War--Moral and ethical aspects--United States.
Princeton subject headings:
Drone aircraft--Government policy--United States.
Drone aircraft--Moral and ethical aspects--United States.
Drone aircraft--United States.
National security--United States.
United States--Military policy--Moral and ethical aspects.
War--Moral and ethical aspects--United States.