| 1 | Any time we would surely be spotted by enemy planes flying in and out of the airfield. | |
| 2 | But it turned out to be a piece of cake: no anti-aircraft fire and no enemy fighters. | |
| 3 | But it turned out to be a piece of cake: no anti-aircraft fire and no enemy fighters. | |
| 4 | Pilots used a pacing tool called a tachistoscope that flashed images before their eyes at increasing speeds. | |
| 5 | If the missile is not at least as fast and aerodynamically nimble as the targeted jetfighter, then it cannot hit its target. |
