there is another way of doing it, you block your unit in somewhere and you click repeadtly on the other side of the area until you see this weird jumbled up msg at the bottom of the screen. Then you hit "F" (that was the eta hotkey for flying) if you do it right your drone pops into the air, the game freezes, you have the time to take a sn once, and then it crashes.
EDIT: i would post the screenshot but its so jmbled up i can't remember where the drone was on the screen.