ATLANTIC OCEAN (Oct. 8, 2021) Cryptologic Technician (Maintenance) 3rd Class Tyler Wallace, assigned to the San Antonio-class amphibious transport dock ship USS Arlington (LPD 24), executes a rear strike with a baton during security reaction force-basic (SRF-B) training while underway in the Atlantic Ocean, Oct. 8, 2021. Sailors are sprayed with oleoresin capsicum (OC) spray and must complete strikes, blocks and take-downs prior to being certified in SRF-B. (U.S. Navy photo by Mass Communication Specialist 2nd Class John D. Bellino)