Although George is correct in that you can be posted to any Base/Wing/Unit/HQ, there are certain issues that come with the Distinctive Environmental Uniform (DEU) you wear. For example, while certain Army courses are mandatory for MPOs wearing Army DEU, they are not mandatory for MPOs wearing the Navy and Air Force DEU, although it is recommended that we take them. One of the biggest issues is that there are certain postings where specific DEUs would be "preferred"...however, you could always request to switch DEUs in order to better align yourself with a certain career path if so desired and approved.