14 CFR § 450.110 - Physical containment.
(a) Applicability. This section applies to the use of physical containment as a hazard control strategy for the flight, or phase of flight, of a launch or reentry vehicle to meet the safety criteria of § 450.101(a), (b), and (c).
(3) Ensure the hazard area is clear of the public and critical assets; and
(c) Application requirements. An applicant must submit in its application the following:
(1) A demonstration that the launch vehicle does not have sufficient energy for any hazards associated with its flight to reach outside the flight hazard area developed in accordance with § 450.133; and
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