Senior Airman Ruben Heredia explains a compass to 5th graders during their Explorers Field Day Jan. 26, 2012. Heredia used land navigation techniques to teach the children how to use a compass. Heredia is a native of San Antonio and is currently deployed from Kadena Air Base, Japan.
Staff Sgt. Nathanael Callon
Taken on 26 January 2012
<a rel="nofollow" class="external free" href="https://www.dvidshub.net/image/516483">https://www.dvidshub.net/image/516483</a>