premise: Those who do n't pass this training will have to give up their jetpack . Fortunately they 'll get their money back . Each jetpack is equipped with a ballistic parachute , and though it 's more dangerous than most other current flying options , Glenn Martin hopes to sell between 10 and 20 devices by this time next year . What may happen if you do n't pass your training ?
hypothesis: I would n't be able to keep my equipment .