we have cathy wetener from the airport. >> good morning, chair chu, supervisor avalos. [speaker not understood]. the airport is here seeking your retroactive approval for four leases with cingular, sprint-nextel, verizon and t-mobile to continue to provide cellular services to our passengers at cfo. at this time we're also requesting approval for modification to extend three of the four leases for an additional five years. * sfo the current leases with the cellular providers were approved by the airport commission in 2009 for an original term of five years. staff inadvertently neglected to bring the leases to the board at that time. it was determined that the nature of the cellular service leases did not lend itself to selecting one provider through an exclusive lease. therefore any cellular license service provider were invite today provide service at the airport as long as it was determined they met all of the city and county of san francisco contract requirements. and i believe that it was this unusual process that may have led to some confusion over whether or not b