The $2 bill is PR for the military base when the town starts grousing about having all those military types wandering the streets. The base has a $2 payday and the bills immediately show up everywhere in town. Makes people conscious of how much of their affluence is due to the presence of the military base.
That is pretty clever.
I've got a bunch of $2 bills in a drawer, now I'll have to save them for sure. Either that or take them to a bank.