$URS sinkhole detected. Lots of April calls @ 50.00 were written. http://stockcharts.com/c-sc/sc?s=URS&p=D&b=3&g=0&i=p69412508847&r=1361457330369http://stockcharts.com/c-sc/sc?s=URS&p=w&b=3&g=0&i=p69412508847&r=1361457330369