U.S. Air Force Senior Airman Devyn Gaffney, 633rd Operational Medical Readiness Squadron physical therapy technician, performs a Cat-Cow stretch while being monitored by Capt. Jenna Boyd, 633rd OMRS physical therapist, at Joint Base Langley-Eustis, Virginia, Oct. 20, 2020. The Cat-Cow stretch is used to help improve mobility of the spine. (U.S. Air Force photo by Senior Airman Marcus M. Bullock)