The <a href="https://en.wikipedia.org/wiki/Roma_(airship)" class="extiw" title="w:Roma (airship)">Roma</a> served in the US Army until February 21, 1922, when it crashed in Norfolk, Virginia. It was the last hydrogen filled airship used by the US; subsequent ships were filled with helium.
<i>Virginia Pilot</i>
Norfolk Public Library, originally published in the <i>Virginia Pilot</i> on February 22, 1922.