On 4/9, from 5 am to 7 am, building automation communications will be unavailable to the control room technicians. Out of an abundance of caution, all BSL‑3 work in the building will not be allowed for the duration of the outage. No BSL‑3 laboratory work should be started, and any work in progress should be planned so it can be completed or safely stopped prior to the outage. Researchers should not enter BSL‑3 spaces for work during this period.