Yes ... and Iran has already claimed to have taken over one of the (at the time) most technologically advanced U.S. drones - https://en.wikipedia.org/wiki/Iran%E2%80%93U.S._RQ-170_incid....

Iran has claimed a lot of things, but I have serious problems believing them when they got their nuclear facility hacked. My office network has more security than that.

What could go wrong with remote control technology over our important military assets? Of course the answer is a lot, especially in wartime. For all the paranoid people thinking that the military or police or whatever US security service will take over the country in a secret coup, the people who make up those forces are an important bulwark against tyranny from within or without.

It's very dangerous to be a pilot and a soldier but as a software engineer I don't know how I could ever feel safe in a world without people making decisions about how to use weapons.

You are absolutely correct about the need for people to be making decisions. A small number of people have already averted what could have been global nuclear war (https://www.theguardian.com/science/2017/oct/27/vasili-arkhi... and other similar articles and especially item #8 on this list http://metro.co.uk/2016/07/18/13-times-the-world-came-close-...)