DENVER (AP) — As Western states prepare for this year’s wildfire season, the world’s largest firefighting plane has been grounded and could be converted to help fight against another crisis, the COVID-19 pandemic. After investing tens of millions into upgrading the Global SuperTanker and its technology, the revenue coming mostly from contracts with the U.S. government and California did not produce enough profit for the company to continue the funding the tanker, said Roger Miller, managing director at Alterna Capital Partners LLC, the investment company that owns the plane.... ...Other Very Large Airtankers can carry up to 8,000 gallons (30,283...