The two chest pieces are tested and power on, they make a loud noise when the batteries are inserted and the units are turned on. 
The blasters will not power on, or at least I can't get them to make any noise or show signs of life. The blasters have some corrosion in the battery compartments, the battery compartments on the chest pieces are both clean. Please see the pictures for more details. Ships fast via USPS Ground Advantage.
Thanks for looking!