The intent of this Report, by approaching certain problems from the standpoint of many different alternatives, ioes not imply uncertainty as to the engineering analysis, but is intended to form a basis upon which rolicy decisions can now be intelligently made, and as a basis upon which such policies may be easily modified or supplemented in terms of later informa= tion. Similarly, construction planning must be sufficiently versatile to accommodate, without disruption, major changes, deletions and additions, up to the actual time of testing. This is believed to be one of the most vital objectives in conceiving the scope of this Report, and the entire Report should be so evaluated. This Report will assume a vroving ground use equal to the period of two series of tests. The discussions of final design, construction, and operation in this report presume the awarding of civilian contracts for the performance of prov= ing ground establishment, exclusive of these services. (a) Communication, between the Atoll and the outside world. (b) Security regulations, policing, military patrol and aircraft operation. (c) Hospitalization beyond ability of field medical service. (d) Military air and surface transportation, to the extent available. (e) Military supply of certain vehicles, boats, and equipment to the extent available. (f) Military support of the Eniwetok garrison. (g) Civil functions of government, affecting the common welfare, civil processes of law, and rules of the road by air and sea. (h) Air-sea rescue, and evacuation of serious casualties and deceased.