. >> what you are seeing up there is just the b roll of the activation at saint marmary's a the activation of the drill. >> as part of yellow command, san francisco participates every year. this year in partnership with the human services agency and department of public health, we activated a local shelter. you've seen it on the screen. and what we -- our goal was to test the city's ability to set up and manage a shelter here in san francisco. and so that was a big goal. we wanted to integrate services into the cathedral. it's a step where department of health has taken the lead in putting this together. so we were excited to test and activate for the exercise. and so in addition to the shelter, we activated the human services agency's department operations center as well as department of public health. and our san francisco emergency operation center. the focus was to support any needs. so personnel, equipment or social service needs that were coming in, so that was the role at the d.o.c. and e.o.c. level to coordinate and fill the gaps, so that's what we were doing during the sker sues a