If they’re dressed like illegal aliens nobody will notice.
I’ll predict how this goes. A dozen-odd guys will be ordered to dress local and do X, Y, and Z. They will get in some pick-up....drive around for four days....pretend to X, Y and Z....and mostly drink beer at some local Hooters.
Sarge will find out by the last day and chew them out. The Captain will admit that he was drunk for the whole time as well, and the Colonel was actually at some Indian reservation casino for the whole time.