We were discussing that while waiting for her to return this afternoon...
Water* is two pounds per gallon heavier than fuel (8lbs/gal Vs 6lbs/gal) but we figure that since she has no interior (either seats nor tanks like a KC-10), she's still well below max gross takeoff weight even with a load of slurry.
(*I do not know the specific gravity of the fire fighting chemicals...)
Asked a buddy of mine that does some aerial firefighting and he said, that depending on the mix it's between 9-13lbs/gal
. It's some pretty heavy stuff. In comparison, concrete is 12lbs/gal.
Put this stuff in a 787 and the wings would look like the 10 here. LOL
Gripped, 50mm f/1.8, 18-55mm f/4-5.6, 24-105mm 


