Answer: flybys

AnswerCrossword Clue
FLYBYSAirshow thrills
FLYBYSLow-altitude Blue Angels passes
FLYBYSSpacecraft data-collection passes
FLYBYSMeans of obtaining data about planets
FLYBYSVisits by Voyager 1, e.g.
flybysFLYBY, a flight, at low altitude or close range, also FLYPAST