MAA (military acronyms & abbreviations)
'(<a href="http://www.j-archive.com/media/2005-10-27_DJ_14.jpg" target="_blank">Cheryl of the Clue Crew gives the clue while walking down a Pentagon corridor.</a>)  The 20,000+ people who work here at the Pentagon include the CJCS, short for this senior-ranking armed forces member'
Chairman of the Joint Chiefs of Staff