Public Safety Officer Support Act of 2021 This bill extends death and disability benefits under the Public Safety Officers' Benefits Program (PSOB) to certain public safety officers and survivors of public safety officers who are diagnosed with post-traumatic stress disorder or acute stress disorder following a stressful situation while on duty. The PSOB program provides death, disability, and education benefits to public safety officers and survivors of public safety officers who are killed or injured in the line of duty.