The availability of sufficient workforce housing has been a perennial problem in the Vail Valley, but this past year it reached a critical mass. It was the No. 1 concern in the recent town survey as business owners are saying they are working longer hours as they struggle to offset a shortage of employees; some are even giving serious consideration to closing up shop and leaving the area. And on the other side of the cash register, there are growing complaints about the availability of service in the businesses. In some ways, we are fast approaching a perfect storm.