High Acuity Low Occurrence (HALO) procedures course prepare candidates for high-consequence patient encounters. The HALO (or High Acuity, Low Occurrence) procedures course includes the following: Lateral canthotomy, subclavian access, Resuscitative hysterotomy, Emergency delivery and emergency amputation. hods. Learning will be tailored to learners' group level. Trainees will have the opportunity to complete indexed PBA (Ex Fix, ORIF). Senior fellows and consultants will be guided to more advanced approaches. Nationally renowned faculty.