Fire alarm<br>Sterile.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/21526441@N00">Johanna Abzug</a> from Austin, TX., USA.
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/21526441@N00/4758494">Flickr</a>