You are responsible for the on-call duties of an infrastructure service with a large number of dependent systems. Suddenly, you receive an alert notifying you that the service is experiencing widespread request failures, impacting all of its dependent systems that serve hundreds of thousands of users. Following the Site Reliability Engineering (SRE) incident management protocol, you take on the role of Incident Commander (IC) and enlist the assistance of two experienced individuals from your team: an Operations Lead (OL) and a Communications Lead (CL). What would be the subsequent course of action you should take?