Ralph Haller was the twelfth deputy director of the National Reconnaissance Office.

[1] The Principal Deputy Director of the NRO reports to and coordinates with the Director of the NRO on all NRO activities.

The PDDNRO provides overall day-to-day management of the NRO with decision responsibility as delegated by the DNRO and, in the absence of the DNRO, acts on behalf of the DNRO on all matters.

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