Air conditioner airlift delayed By SEAN O'SULLIVAN and ROBIN BROWNStaff reporters08/22/2003 The cool breeze provided to U.S. troops in Iraq through the Delaware-based Operation Air Conditioner has been switched off. Late last week, the U.S. Postal Service told Frankie Mayo of Bear - who has been sending soldiers air conditioners - that she no longer can ship them through the mail because the chemical coolant in the units is considered a hazardous substance. Tad Kelley, a spokesman for the U.S. Postal Service, said international law prohibits hazardous substances from being sent through the mail by any nation or postal service....