A preliminary report on how the Denver airport responded to a blizzard last month says the airport wasn't prepared for a storm that big.
Denver International Airport was closed for 45 hours starting on December 20th.
More than two thousand flights were canceled and about 47-hundred travelers were stranded.
Some people spent days in the airport.
The Denver Post is reporting that preliminary findings by consultant Tim Phillips show it will cost tens of millions of dollars to fix the problems at DIA.
Phillips says the airport could handle a storm dropping six to eight inches of snow over 12 hours -- but not the 20 to 22 inches that fell over 34 hours.
The report says DIA needs high-speed, multifunction snow-removal equipment, industrial-size snow melters, more staffs and better communication within airport departments.