A retired admiral who berated President Donald Trump as "embarrassing" to the country has stepped down from his position on an influential Defense Department advisory body.<br />'' <br />''Pentagon spokesperson Lt. Col. Michelle Baldanza said, Admiral William McRaven, who supervised the 2014 Special Forces raid in Pakistan that killed Al-Qaeda kingpin Osama Bin Laden, resigned last month from the Defense Innovation Board.<br />'' <br />''The Innovation Board brings together top private sector technologists and scientists to advise the Pentagon and the Secretary of Defense.<br />'' <br />''The resignation was effective on August 20, four days after McRaven published a scathing open letter to Trump in the Washington Post.<br />''<span style="color: #222222;"> </span><br />