text:  Fire officials say the high temperatures are complicating firefighting efforts. Several air tankers and helicopters have been assigned to the blaze, as well as hundreds of wildland firefighters. Nathan Rott, NPR News. Stocks bumped to a mix close today with both the Nasdaq and the broader market continuing their record run-up, though blue chips lost ground. Traders, meanwhile, awaiting some key second quarter earnings numbers due out this week.