23rd Street Fire
... that the New York City Fire Department lost 12 firefighters in the 23rd Street Fire in 1966, the department's largest loss of life in a single incident until 343 officers were killed on September 11, 2001?
... that the <a href="./New_York_City_Fire_Department" id="mwD9I" rel="mw:WikiLink" title="New York City Fire Department">New York City Fire Department</a> lost 12 firefighters in the <b id="mwD9M"><a href="./23rd_Street_Fire" id="mwD9Q" rel="mw:WikiLink" title="23rd Street Fire">23rd Street Fire</a></b> in 1966, the department's largest loss of life in a single incident until 343 officers were killed on <a class="mw-redirect" href="./September_11,_2001_attacks" id="mwD9U" rel="mw:WikiLink" title="September 11, 2001 attacks">September 11, 2001</a>?