"The fire that surrounds the nuclear lab in Los Alamos, New Mexico has grown to at least 61,000 acres -- large enough that its smoke can be seen from space – and concerns are now growing over what's in that smoke.
The alarm over the smoke has prompted the Environmental Protection Agency to bring in air monitors, along with a special airplane that checks for radiation levels. So far officials have not been able to find anything.
'Our facilities and nuclear material are protected and safe,' Laboratory Director Dr. Charles McMillan told ABC News. "
Ryan Owens reports for ABC News June 29, 2011.