I don't see what the big deal is. They're having fun. They could step out of wherever they are and get their heads blown off or be kidnapped and have it sawed off alive.
Pretty much.
I figure they're blowing off steam.
Unfortunately, much can be made out of it.
Swap out the girls with guys wrestling in the sand and it becomes nothing at all.
If there are to be women in uniform, then why the fuss when something like this happens I wonder?