Eventually I expect a large percent of military combat planes will be remotely piloted, there are a bunch of advantages.

But currently they are all more prone to going out of control and crashing. The remote pilot simply doesn't get as much or as responsive feedback as a pilot in the plane, and when things go bad they tend to fail totally.

Not to mention that Russia and China are surely working on powerful jamming systems. If we are dependent on remote vehicles in combat, one good jamming system could shut our forces down.

Jay