Random Riddle: U.S. Flag Laws

According to U.S. law, there are officially designated days that all U.S. flags are to be flown at half-mast (for example: Memorial Day). The President and state governors also have the right to declare certain days that flags are to be flown at half-mast.

There is a particular group of U.S. flags that are never lowered to half-mast and appear to “violate” this U.S. Law. These flags were erected by U.S. Military personnel, but those troops will never be accused of doing anything wrong for those violations.

These flags are currently displayed today, and they have been for numerous years. Where is this particular group of flags displayed?
 

Random Riddle: U.S. Flag Laws