Does not bother me one whit that Aerotech has done so in actual reality if that is true.
Permits are often legally required by useless nuisance gubmint agencies for a plethora of things where they should not need be in the name of mamby-pamby safety.

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When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't !
Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, and HAVOC !