These balloons are launched all of the time by radio amateurs:
<a href="https://amateur.sondehub.org/#!mt=Voyager&mz=5&qm=12h&mc=42.81152,-114.87305" rel="nofollow">https://amateur.sondehub.org/#!mt=Voyager&mz=5&qm=12h&mc=42....</a>
How high do hot air balloons go? And I'm wondering what dropoff a air rifle has.<p>Hot air balloon + the Milwaukee leaf blower is USAF new budget request