Not Assange.
He is referencing:
>Petty Officer First Class Kristian Saucier pleaded guilty in May 2016 to two felony counts, one for unlawful retention of national defense information and another for obstruction of justice, for taking cellphone pictures inside the Navy vessel and later destroying his own equipment upon learning he was under investigation.
https://www.politico.com/story/2018/03/09/donald-trump-kristian-saucier-pardon-450484