Any time we would surely be spotted by enemy planes flying in and out of the airfield.

But it turned out to be a piece of cake: no anti-aircraft fire and no enemy fighters.

But it turned out to be a piece of cake: no anti-aircraft fire and no enemy fighters.

Pilots used a pacing tool called a tachistoscope that flashed images before their eyes at increasing speeds.

If the missile is not at least as fast and aerodynamically nimble as the targeted jetfighter, then it cannot hit its target.