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So what is the mystery aircraft? The blacked-out portion of the document suggests the missing portion is five to seven characters long. With that in mind, the super secret RQ-170 Sentinel – a six character designation that would fit in the redacted segment – is one possibility.
Of course, the censored plane could be something entirely new. For decades, the Pentagon and the CIA have repeatedly acknowledged advanced aircraft projects — after the fact — only to decline to release any significant information about them.