scenario. and so they initially, since she was already trained for another odor, it only takes a few weeks to get them proficient to a new odor. if it's a brand new dog that's never been trained, it make take up to a few months to get them proficient. >> right now they're checking employees, right? have they found any that are positive? and when might this move to people besides employees, just the regular public there? >> this is the fourth week of a pilot that will last another month after this month. and then once we look at the data, we'll decide whether to potentially apply them to passengers. we had one employee, for example, who cobra alert ed to. it turned out they had just recovered from covid-19. so when the employee test positive by the canine, then they do a pcr test and agree to