A PMHNP provides outpatient psychiatric follow-up care via telehealth to a 42-year-old male patient with bipolar I disorder who resides in a different state from the PMHNP's physical practice location. During a scheduled video visit, the patient becomes acutely agitated, discloses that he has stopped taking his mood stabilizer three days ago, and states that he has access to firearms in his home. His speech is pressured, and he is expressing grandiose delusions about a special mission. The PMHNP is concerned about the patient's safety and the safety of others. Which of the following represents the most appropriate response to this telehealth crisis situation?