thinking back to the original UFO: Enemy Unknown/XCOM: UFO Defence and how the most dangerous foe you'd ever face was not the Ethereals, or the Crysalids, or getting mind controlled at higher levels, or all that guff
no

it was johnny rookiefingers in the back of the skyranger who has somehow gotten hold of the Blaster Bomb launcher and because an alien fired a plasma pistol past the hatch, missing everyone entirely, he does the only thing he can, and panicfires into the wall behind him.