Somebody, save TEPCO or at least TEPCO workers who will have to hold two balloons just inside the truck bay of the high-radiation Reactor 1 building...
They could use a horde of these self-organizing flying robots by Vijay Kumar at University of Pennsylvania instead.
But TEPCO as being TEPCO (and now it is controlled by even less-imaginable national government of Japan), the company will send workers holding balloons with video cameras attached to survey the operating floor and measure radiation levels in Reactor 1 in early August, as the first step toward eventually removing the fuel assemblies from the Spent Fuel Pool.
Just remember the Onsen powder as tracer, baby diaper polymers and shredded newspaper to plug the hole near the water intake for Reactor 2 that was leaking the extremely radioactive water (over 1 sievert/hour radiation above the hole) in April last year. Anything is possible with this company.
From TEPCO's presentation at the Fukushima nuclear accident technology workshop, in Japanese only (7/23/2012):