the advantages and disadvantages of military drones

this paper need 4-5 pages  and the deadline is  March/11/2018, 08:00 am NYC

you need cite the resource in the article and write a reference in the end.

the advantages can include:

1. No driver on the drone , save control and safety rescue equipment in the cockpit and the relevant cycle.
2. Suitable for the implementation of the task with high risk
3. Adapt to more intense maneuver operation and more dangerous flight environment
4. Lower  maintenance cost 
6. etc.
7. more you want to add

the disadvantages can include:

1. GPS interference
2. influence from human
3. reaction time lagging behind the ordinary aircraft
4. more dependent on communication resources
5. a single point failure about drone technology

etc.