Art Pact 216 - Underwater
Bigger by far than the tanks I was towing were the two huge air tanks attached to the side of the little drone. It buzzed along behind us, its motors making a low thrumming noise quite unlike the high-pitched electric whine they'd made at the surface. The tanks either side of it were almost as large as the drone itself, man-sized tanks with heavy-duty connectors at each end. At the forward end the connectors had been used to attach multi-regulator heads, attachments that would allow two men to breath from the front of the tank - purely a precaution in case any of our suits went out, although we had used them briefly when the time came to change over Alexander's tank and refresh his supply. We'd left the empty sitting on the seabed with a responder beacon, a super-bright bulb that would flash when it received a ping from a friendly device. It would lay hidden until we came to retrieve it, helping to keep our mission secret. I was much more worried about the sound of the dro