Sokolowski has invoked his right against self incrimination and will not testify.

NPR: Marine General Testifies at Haditha Hearing

Mr Davis' attorney, Thomas Fitzpatrick, said his client was innocent and defended his right to take the Fifth Amendment, referring to the constitutional right against self incrimination.

BBC: Merrill fires two execs with Enron links

Here a magistrate judge ruled that producing the passphrase for the encrypted hard drive would constitute self-incrimination, but on appeal the District Court overturned that decision, holding that decrypting and producing the complete contents would not constitute self-incrimination since Boucher initially cooperated in showing some of the computer files to border agents.

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