SMS Ostfriesland
... that the German battleship SMS Ostfriesland was sunk by American bombers during air power tests conducted by Billy Mitchell in 1921?
... that the <a href="./German_Empire" id="mwEwg" rel="mw:WikiLink" title="German Empire">German</a> <a href="./Battleship" id="mwEwk" rel="mw:WikiLink" title="Battleship">battleship</a> <b id="mwEwo"><a about="#mwt68" data-mw='{"parts":[{"template":{"target":{"wt":"SMS","href":"./Template:SMS"},"params":{"1":{"wt":"Ostfriesland"}},"i":0}}]}' href="./SMS_Ostfriesland" id="mwEws" rel="mw:WikiLink" title="SMS Ostfriesland" typeof="mw:Transclusion">SMS<span typeof="mw:Entity"> </span><i>Ostfriesland</i></a></b> <i id="mwEww">(pictured)</i> was sunk by American <a href="./Bomber" id="mwEw0" rel="mw:WikiLink" title="Bomber">bombers</a> during air power tests conducted by <a href="./Billy_Mitchell" id="mwEw4" rel="mw:WikiLink" title="Billy Mitchell">Billy Mitchell</a> in 1921?